pyramid

• POS: Noun, Verb (usu participle), Verb (transitive)
• HYPHEN: pyr=a=mid

CIDE DICTIONARY

pyramid, n. [L. pyramis, -idis, fr. Gr. , , of Egyptian origin: cf. F. pyramide.].

•  A solid body standing on a triangular, square, or polygonal base, and terminating in a point at the top; especially, a structure or edifice of this shape.  [1913 Webster]
•  A solid figure contained by a plane rectilineal figure as base and several triangles which have a common vertex and whose bases are sides of the base.  [1913 Webster]
•  The game of pool in which the balls are placed in the form of a triangle at spot.  [1913 Webster]
•  a fraudulent investment scheme in which the manager promises high profits, but instead of investing the money in a genuine profit-making activity, uses the money from later investors to pay the profits to earlier investors; -- also called pyramid scheme or pyramid operation. This process inevitably collapses when insufficient new investors are available, leaving the later investors with total or near-total losses of their investments. The managers usually blame government regulations or interference for the collapse of the scheme, rather than admit fraud.  [PJC]

Altitude of a pyramid (Geom.), the perpendicular distance from the vertex to the plane of the base. -- Axis of a pyramid (Geom.), a straight line drawn from the vertex to the center of the base. -- Earth pyramid. (Geol.) See Earth pillars, under Earth. -- Right pyramid (Geom.) a pyramid whose axis is perpendicular to the base.

pyramid, v. i. 

 To enlarge one's holding or interest in a series of operations on a continued rise or decline by using the profits to buy or sell additional amounts on a margin, as where one buys on a 10% margin 100 shares of stock quoted at 100, holds it till it rises to 105, and then uses the paper profit to buy 50 shares more, etc. The series of operations constitutes a pyramid. A similar process of reinvesting gains or winnings (as of a gamble), but not involving operation on margin, is called a parlay.  [Webster 1913 Suppl.]

pyramid, v. t. 

 To use, or to deal in, in a pyramiding transaction. See Pyramid, v. i.  [Webster 1913 Suppl.]

OXFORD DICTIONARY

pyramid, n.
1 a monumental structure, usu. of stone, with a square base and sloping sides meeting centrally at an apex, esp. an ancient Egyptian royal tomb.
2 a solid of this type with a base of three or more sides.
3 a pyramid-shaped thing or pile of things.
4 (in pl.) a game played on a billiard-table with (usu. 15) coloured balls and a cue-ball.

Idiom

pyramid selling a system of selling goods in which agency rights are sold to an increasing number of distributors at successively lower levels.

Derivative

pyramidal adj. pyramidally adv. pyramidic adj. (also pyramidical). pyramidically adv. pyramidwise adj.

Etymology

ME f. L pyramis f. Gk puramis -idos

THESAURUS

pyramid

add to, aggrandize, amplify, animal kingdom, antenna tower, anthill, arch, architecture, augment, bank, bank up, barbican, barrow, be caught short, be short, beehive tomb, belfry, bell tower, belong, bone house, boost, boundary stone, box grave, brass, broaden, bucket, bucketshop, build, build up, building, burial, burial chamber, burial mound, bust, cairn, campanile, catacombs, cenotaph, chain of being, charnel house, cist, cist grave, class structure, cock, colossus, column, construct, construction, cromlech, cross, crypt, cup, cupola, cyclolith, deep six, deposit margin, derrick, dokhma, dolmen, domain, dome, drift, dune, edifice, embankment, enlarge, erection, establishment, exalt, expand, extend, fabric, fatten, fill out, fire tower, footstone, go long, grave, gravestone, haycock, haymow, hayrick, haystack, headstone, heap, heap up, hierarchy, hike, hike up, hill, hoarstone, hold on, house, house of death, increase, inflate, inscription, jack up, jump up, kingdom, lantern, last home, lengthen, lighthouse, long home, low green tent, low house, make a killing, make a scoop, margin up, marker, martello, martello tower, mass, mast, mastaba, mausoleum, maximize, megalith, memento, memorial, memorial arch, memorial column, memorial statue, memorial stone, menhir, minaret, mineral kingdom, miss the market, molehill, monolith, monstrance, monument, mound, mountain, mow, mummy chamber, narrow house, natural hierarchy, necrology, obelisk, obituary, observation tower, operate, ossuarium, ossuary, overstay the market, packaged house, pagoda, parlay, passage grave, pecking order, pilaster, pile, pile up, pillar, pinnacle, pit, plaque, play the market, plunge, pole, power structure, prefab, prefabrication, prize, put up, pylon, raise, realm, reliquary, remembrance, resting place, ribbon, rick, rostral column, scalp, scoop the market, sepulcher, shaft, shaft grave, shrine, skyscraper, snowdrift, speculate, spire, stack, stack up, stag, stag the market, standpipe, steeple, stela, stone, structure, stupa, superstructure, tablet, take a flier, television mast, testimonial, thicken, tomb, tombstone, tope, tour, tower, tower of silence, trade on margin, trophy, tumulus, turret, up, vault, vegetable kingdom, venture, water tower, windmill tower, windrow

ROGET THESAURUS

pyramid

Assemblage

N assemblage, collection, collocation, colligation, compilation, levy, gathering, ingathering, muster, attroupement, team, concourse, conflux, congregation, contesseration, convergence, meeting, levee, reunion, drawing room, at home, conversazione, assembly, congress, convention, conventicle, gemote, conclave, posse, posse comitatus, Noah's ark, miscellany, collectanea, museum, menagerie, museology, crowd, throng, group, flood, rush, deluge, rabble, mob, press, crush, cohue, horde, body, tribe, crew, gang, knot, squad, band, party, swarm, shoal, school, covey, flock, herd, drove, atajo, bunch, drive, force, mulada, remuda, roundup, array, bevy, galaxy, corps, company, troop, troupe, task force, army, regiment, host, populousness, clan, brotherhood, fraternity, sorority, association, volley, shower, storm, cloud, group, cluster, Pleiades, clump, pencil, set, batch, lot, pack, budget, assortment, bunch, parcel, packet, package, bundle, fascine, fasces, bale, seron, seroon, fagot, wisp, truss, tuft, shock, rick, fardel, stack, sheaf, haycock, fascicle, fascicule, fasciculus, gavel, hattock, stook, accumulation, congeries, heap, lump, pile, rouleau, tissue, mass, pyramid, bing, drift, snowball, snowdrift, acervation, cumulation, glomeration, agglomeration, conglobation, conglomeration, conglomerate, coacervate, coacervation, coagmentation, aggregation, concentration, congestion, omnium gaterum, spicilegium, black hole of Calcutta, quantity, collector, gatherer, whip, whipper in, assembled, closely packed, dense, serried, crowded to suffocation, teeming, swarming, populous, as thick as hops, all of a heap, fasciculated cumulative, the plot thickens, acervatim, tibi seris tibi metis.

Angularity

N angularity, angularness, aduncity, angle, cusp, bend, fold, notch, fork, bifurcation, elbow, knee, knuckle, ankle, groin, crotch, crutch, crane, fluke, scythe, sickle, zigzag, kimbo, akimbo, corner, nook, recess, niche, oriel, coign, right angle, obliquity, angle of 45 degrees, miter, acute angle, obtuse angle, salient angle, reentering angle, spherical angle, angular measurement, angular elevation, angular distance, angular velocity, trigonometry, goniometry, altimetry, clinometer, graphometer, goniometer, theodolite, sextant, quadrant, dichotomy, triangle, trigon, wedge, rectangle, square, lozenge, diamond, rhomb, rhombus, quadrangle, quadrilateral, parallelogram, quadrature, polygon, pentagon, hexagon, heptagon, octagon, oxygon, decagon, pyramid, cone, Platonic bodies, cube, rhomboid, tetrahedron, pentahedron, hexahedron, octahedron, dodecahedron, icosahedron, eicosahedron, prism, pyramid, parallelopiped, curb roof, gambrel roof, mansard roof, angular, bent, crooked, aduncous, uncinated, aquiline, jagged, serrated, falciform, falcated, furcated, forked, bifurcate, zigzag, furcular, hooked, dovetailed, knock kneed, crinkled, akimbo, kimbo, geniculated, oblique, fusiform, wedge-shaped, cuneiform, cuneate, multangular, oxygonal, triangular, trigonal, trilateral, quadrangular, quadrilateral, foursquare, rectangular, square, multilateral, polygonal, cubical, rhomboid, rhomboidal, pyramidal, angularity, angularness, aduncity, angle, cusp, bend, fold, notch, fork, bifurcation, elbow, knee, knuckle, ankle, groin, crotch, crutch, crane, fluke, scythe, sickle, zigzag, kimbo, akimbo, corner, nook, recess, niche, oriel, coign, right angle, obliquity, angle of 45 degrees, miter, acute angle, obtuse angle, salient angle, reentering angle, spherical angle, angular measurement, angular elevation, angular distance, angular velocity, trigonometry, goniometry, altimetry, clinometer, graphometer, goniometer, theodolite, sextant, quadrant, dichotomy, triangle, trigon, wedge, rectangle, square, lozenge, diamond, rhomb, rhombus, quadrangle, quadrilateral, parallelogram, quadrature, polygon, pentagon, hexagon, heptagon, octagon, oxygon, decagon, pyramid, cone, Platonic bodies, cube, rhomboid, tetrahedron, pentahedron, hexahedron, octahedron, dodecahedron, icosahedron, eicosahedron, prism, pyramid, parallelopiped, curb roof, gambrel roof, mansard roof, angular, bent, crooked, aduncous, uncinated, aquiline, jagged, serrated, falciform, falcated, furcated, forked, bifurcate, zigzag, furcular, hooked, dovetailed, knock kneed, crinkled, akimbo, kimbo, geniculated, oblique, fusiform, wedge-shaped, cuneiform, cuneate, multangular, oxygonal, triangular, trigonal, trilateral, quadrangular, quadrilateral, foursquare, rectangular, square, multilateral, polygonal, cubical, rhomboid, rhomboidal, pyramidal.

Sharpness

N sharpness, acuity, acumination, spinosity, point, spike, spine, spicule, spiculum, needle, hypodermic needle, tack, nail, pin, prick, prickle, spur, rowel, barb, spit, cusp, horn, antler, snag, tag thorn, bristle, Adam's needle, bear grass, tine, yucca, nib, tooth, tusk, spoke, cog, ratchet, crag, crest, arete, cone peak, sugar loaf, pike, aiguille, spire, pyramid, steeple, beard, chevaux de frise, porcupine, hedgehog, brier, bramble, thistle, comb, awn, beggar's lice, bur, burr, catchweed, cleavers, clivers, goose, grass, hairif, hariff, flax comb, hackle, hatchel, heckle, wedge, knife edge, cutting edge, blade, edge tool, cutlery, knife, penknife, whittle, razor, razor blade, safety razor, straight razor, electric razor, scalpel, bistoury, lancet, plowshare, coulter, colter, hatchet, ax, pickax, mattock, pick, adze, gill, billhook, cleaver, cutter, scythe, sickle, scissors, shears, pruning shears, cutters, wire cutters, nail clipper, paper cutter, sword, bodkin, belduque, bowie knife, paring knife, bushwhacker, drawing knife, drawing shave, microtome, chisel, screwdriver blade, flint blade, guillotine, sharpener, hone, strop, grindstone, whetstone, novaculite, steel, emery, sharp, keen, acute, acicular, aciform, aculeated, acuminated, pointed, tapering, conical, pyramidal, mucronate, mucronated, spindle shaped, needle shaped, spiked, spiky, ensiform, peaked, salient, cusped, cuspidate, cuspidated, cornute, cornuted, cornicultate, prickly, spiny, spinous, spicular, thorny, bristling, muricated, pectinated, studded, thistly, briary, craggy, snaggy, digitated, two-edged, fusiform, dentiform, denticulated, toothed, odontoid, starlike, stellated, stelliform, sagittate, sagittiform, arrowheaded, arrowy, barbed, spurred, acinaciform, apiculate, apiculated, aristate, awned, awny, bearded, calamiform, cone-shaped, coniform, crestate, echinate, gladiate, lanceolate, lanciform, awl, awl-shaped, lance-shaped, awl- shaped, scimitar-shaped, sword-shaped, setarious, spinuliferous, subulate, tetrahedral, xiphoid, cutting, sharp edged, knife edged, sharp as a razor, keen as a razor, sharp as a needle, sharp as a tack, sharpened, set.

Interment

N interment, burial, sepulture, inhumation, obsequies, exequies, funeral, wake, pyre, funeral pile, cremation, funeral, funeral rite, funeral solemnity, kneel, passing bell, tolling, dirge, cypress, orbit, dead march, muffled drum, mortuary, undertaker, mute, elegy, funeral, funeral oration, funeral sermon, epitaph, graveclothes, shroud, winding sheet, cerecloth, cerement, coffin, shell, sarcophagus, urn, pall, bier, hearse, catafalque, cinerary urn, grave, pit, sepulcher, tomb, vault, crypt, catacomb, mausoleum, Golgotha, house of death, narrow house, cemetery, necropolis, burial place, burial ground, grave yard, church yard, God's acre, tope, cromlech, barrow, tumulus, cairn, ossuary, bone house, charnel house, dead house, morgue, lich gate, burning ghat, crematorium, crematory, dokhma, mastaba, potter's field, stupa, Tower of Silence, sexton, gravedigger, monument, cenotaph, shrine, grave stone, head stone, tomb stone, memento mori, hatchment, stone, obelisk, pyramid, exhumation, disinterment, necropsy, autopsy, post mortem examination, zoothapsis, burried, burial, funereal, funebrial, mortuary, sepulchral, cinerary, elegiac, necroscopic, in memoriam, post obit, post mortem, beneath the sod, hic jacet, ci-git, RIP, requiescat in pace, the lone couch of his everlasting sleep, without a grave- unknell'd, uncoffin'd, and unknown, in the dark union of insensate dust, the deep cold shadow of the tomb, Special Vitality.