concavity
N ความ เว้า kwam-wao
CONCAVITY
n.Hollowness; the internal surface of a hollow spherical body, or a body of other figure; or the space within such body.
Con *cav "i *ty, n.; pl. Concavities. Etym: [L. concavitas: cf. F.concavité. See Concave. ]
con cav i ty |känˈkavitē kɑnˈkævədi | ▶noun ( pl. concavities ) the state or quality of being concave. • a concave surface or thing.
concavity |kɒnˈkavɪti | ▶noun ( pl. concavities ) [ mass noun ] the state or quality of being concave. • [ count noun ] a concave surface or thing.
con cav i ty /kɑnkǽvəti |kɔn -/名詞 複 -ties U C 凹状, くぼんでいること ; 凹面, へこみ .