Word Study
concavity
CIDE DICTIONARY
concavity, n. [L. concavitas: cf. F. concavité. See Concave.].
A concave surface, or the space bounded by it; the state of being concave. [1913 Webster]
THESAURUS
concavity
aduncity, alveolation, alveolus, antrum, aquilinity, arching, arcuation, armpit, basin, boss, bowl, bump, cavity, circularity, colophon, concameration, concave, convexity, convolution, crater, crookedness, crypt, cup, curvation, curvature, curving, curvity, dactylogram, dactylograph, de-escalation, debasement, decurvation, decurvature, degradation, demotion, dent, depression, descent, detrusion, diminution, dint, dip, ducking, embossment, excrescence, excurvation, excurvature, fingerprint, fold, follicle, footmark, footprint, footstep, fossil footprint, funnel chest, hauling down, hole, hollow, hollow shell, hollowness, hookedness, ichnite, ichnolite, impress, impression, imprint, incurvation, incurvature, incurvity, indent, indentation, indention, lacuna, lowering, lump, pad, paw print, pawmark, pimple, pit, pocket, print, pug, pugmark, punch bowl, recurvation, recurvature, recurvity, reduction, rondure, rotundity, sag, scoop, seal, shell, sigil, signet, sink, sinkage, sinkhole, sinking, sinuosity, sinuousness, sinus, socket, stamp, step, stud, submergence, thrusting under, thumbmark, thumbprint, tortuosity, tortuousness, trough, vaulting, vestige, vugROGET THESAURUS
concavity
Concavity
N concavity, depression, dip, hollow, hollowness, indentation, intaglio, cavity, dent, dint, dimple, follicle, pit, sinus, alveolus, lacuna, excavation, strip mine, trough, honeycomb, cup, basin, crater, punch bowl, cell, socket, valley, vale, dale, dell, dingle, combe, bottom, slade, strath, glade, grove, glen, cave, cavern, cove, grot, grotto, alcove, cul-de- sac, gully, arch, bay, excavator, sapper, miner, honeycomb (sponge), depressed, alveolate, calathiform, cup-shaped, dishing, favaginous, faveolate, favose, scyphiform, scyphose, concave, hollow, stove in, retiring, retreating, cavernous, porous, infundibul, infundibular, infundibuliform, funnel shaped, bell shaped, campaniform, capsular, vaulted, arched.For further exploring for "concavity" in Webster Dictionary Online