buoyancy

• POS: Noun
• HYPHEN: buoy=an=cy

CIDE DICTIONARY

buoyancy, n. 

•  The property of floating on the surface of a liquid, or in a fluid, as in the atmosphere; specific lightness, which is inversely as the weight compared with that of an equal volume of water.  [1913 Webster]
•  The upward pressure exerted upon a floating body by a fluid, which is equal to the weight of the body; hence, also, the weight of a floating body, as measured by the volume of fluid displaced.  [1913 Webster]

  "Such are buoyancies or displacements of the different classes of her majesty's ships."  [1913 Webster]
•  Cheerfulness; vivacity; liveliness; sprightliness; -- the opposite of heaviness; as, buoyancy of spirits.  [1913 Webster]

OXFORD DICTIONARY

buoyancy, n.
1 the capacity to be or remain buoyant.
2 resilience; recuperative power.
3 cheerfulness.

THESAURUS

buoyancy

adaptability, airiness, ascent, bounce, bounciness, breeziness, bubbliness, buoyance, carefreeness, chirpiness, daintiness, debonairness, delicacy, downiness, effervescence, elasticity, ethereality, extensibility, exuberance, flexibility, floatability, fluffiness, foaminess, frothiness, gentleness, give, gossameriness, jauntiness, lack of weight, levitation, levity, light heart, lightheartedness, lightness, lightsomeness, liveliness, perkiness, pertness, rebound, resilience, resiliency, responsiveness, snap, softness, spring, springiness, stretch, stretchability, stretchiness, tenderness, tone, tonicity, tonus, unheaviness, volatility, weightlessness, yeastiness

ROGET THESAURUS

buoyancy

Hope

N hope, hopes, desire, fervent hope, sanguine expectation, trust, confidence, reliance, faith, affiance, assurance, secureness, security, reassurance, good omen, good auspices, promise, well grounded hopes, good prospect, bright prospect, clear sky, assumption, presumption, anticipation, hopefulness, buoyancy, optimism, enthusiasm, heart of grace, aspiration, optimist, utopian, utopist, castles in the air, castles in Spain, chateaux en Espagne, le pot aut lait, Utopia, millennium, day dream, golden dream, dream of Alnaschar, airy hopes, fool's paradise, mirage, fond hope, beam of hope, ray of hope, gleam of hope, glimmer of hope, flash of hope, dawn of hope, star of hope, cheer, bit of blue sky, silver lining, silver lining of the cloud, bottom of Pandora's box, balm in Gilead, light at the end of the tunnel, anchor, sheet anchor, mainstay, staff, heaven, hoping, in hopes, hopeful, confident, secure, sanguine, in good heart, buoyed up, buoyant, elated, flushed, exultant, enthusiastic, heartsome, utopian, unsuspecting, unsuspicious, fearless, free from fear, free from suspicion, free from distrust, free from despair, exempt from fear, exempt from suspicion, exempt from distrust, exempt from despair, undespairing, self reliant, probable, on the high road to, within sight of shore, within sight of land, promising, propitious, of promise, full of promise, of good omen, auspicious, de bon augure, reassuring, encouraging, cheering, inspiriting, looking up, bright, roseate, couleur de rose, rose-colored, hopefully, Int, God speed!, nil desperandum, never say die, dum spiro spero, latet scintillula forsan, all is for the best, spero meliora, every cloud has a silver lining, the wish being father to the thought, hope told a flattering tale, rusticus expectat dum defluat amnis, at spes non fracta, ego spem prietio non emo, un Dieu est ma fiance, hope! thou nurse of young desire, in hoc signo spes mea, in hoc signo vinces, la speranza e il pan de miseri, l'esperance est le songe d'un homme eveille, the mighty hopes that make us men, the sickening pang of hope deferred.

Levity

N levity, lightness, imponderability, buoyancy, volatility, feather, dust, mote, down, thistle, down, flue, cobweb, gossamer, straw, cork, bubble, balloon, float, buoy, ether, air, leaven, ferment, barm, yeast, lighter-than-air balloon, helium balloon, hydrogen balloon, hot air balloon, convection, thermal draft, thermal, light, subtile, airy, imponderous, imponderable, astatic, weightless, ethereal, sublimated, gossamery, suberose, suberous, uncompressed, volatile, buoyant, floating, portable, light as a feather, light as a thistle, light as air, lighter than air, rise like a balloon, float like a balloon.

Elasticity

N elasticity, springiness, spring, resilience, renitency, buoyancy, rubber, India rubber, Indian rubber, latex, caoutchouc, whalebone, gum elastic, baleen, natural rubber, neoprene, synthetic rubber, Buna- S, plastic, flexibility, Young's modulus, elastic, flexible, tensile, spring, resilient, renitent, buoyant, ductile, stretchable, extendable, the stress is proportional to the strain.