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3 definitions found
 for cavity
From The Collaborative International Dictionary of English v.0.48 :

  Cavity \Cav"i*ty\, n.; pl. Cavities. [L. cavus hollow: cf. F.
     1. Hollowness. [Obs.]
        [1913 Webster]
              The cavity or hollowness of the place. --Goodwin.
        [1913 Webster]
     2. A hollow place; a hollow; as, the abdominal cavity.
        [1913 Webster]
              An instrument with a small cavity, like a small
              spoon.                                --Arbuthnot.
        [1913 Webster]
              Abnormal spaces or excavations are frequently formed
              in the lungs, which are designated cavities or
              vomic[ae].                            --Quain.
        [1913 Webster]
     Body cavity, the c[oe]lum. See under Body.
        [1913 Webster]

From WordNet (r) 3.0 (2006) :

      n 1: a sizeable hole (usually in the ground); "they dug a pit to
           bury the body" [syn: pit, cavity]
      2: space that is surrounded by something [syn: cavity,
         enclosed space]
      3: soft decayed area in a tooth; progressive decay can lead to
         the death of a tooth [syn: cavity, caries, dental
         caries, tooth decay]
      4: (anatomy) a natural hollow or sinus within the body [syn:
         cavity, bodily cavity, cavum]

From Moby Thesaurus II by Grady Ward, 1.0 :

  142 Moby Thesaurus words for "cavity":
     abysm, abyss, alveolation, alveolus, antrum, aperture, armpit,
     arroyo, basin, booth, bowl, box, box canyon, breach, break,
     broaching, canyon, cell, cellule, chamber, chap, chasm, check,
     chimney, chink, clearing, cleft, cleuch, clough, col, compartment,
     concave, concavity, coulee, couloir, crack, cranny, crater,
     crevasse, crevice, crib, crypt, cup, cut, cwm, deep, defile, dell,
     depression, depth, dike, dip, disclosure, ditch, donga, draw,
     enclosed space, excavation, fault, fenestra, fissure, fistula,
     flaw, flume, fold, follicle, fontanel, foramen, fracture,
     funnel chest, furrow, gap, gape, gash, gat, gorge, groove, gulch,
     gulf, gully, hiatus, hold, hole, hollow, hollow shell, incision,
     inlet, interval, joint, kloof, lacuna, laying open, leak, manger,
     moat, notch, nullah, opening, opening up, orifice, outlet, pass,
     passage, passageway, pew, pit, pocket, pore, punch bowl, ravine,
     rent, rift, rime, rupture, scissure, scoop, seam, shaft, shell,
     sink, sinus, slit, slot, socket, space, split, stall, stoma,
     throwing open, trench, trough, uncorking, unstopping, vacuity,
     valley, vault, void, vug, wadi, well, yawn, yawning abyss

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