Hypertext Webster Gateway: "concavity"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Concavity \Con*cav"i*ty\, n.; pl. {Concavities}. [L. concavitas:
cf. F. concavit['e]. See {Concave}.]
A concave surface, or the space bounded by it; the state of
being concave.
From WordNet (r) 1.7 (wn)
concavity
n 1: a shape that curves inward [syn: {concave shape}]
2: the property possessed by a concave shape [syn: {concaveness}]
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