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concave    音标拼音: [kɑnk'ev] [k'ɑnkev]
a. 凹的

凹的

concave


concave


concave
adj 1: curving inward [ant: {bulging}, {convex}]

Concave \Con"cave\, v. t. [imp. & p. p. {concaved}; p. pr. & vb.
n. {Concaving}.]
To make hollow or concave.
[1913 Webster]


Concave \Con"cave\ (k[o^][ng]*k[=a]*v" or k[o^]n"-; 277), a. [L.
concavus; con- cavus hollow: cf. F. concave. See {Cave} a
hollow.]
1. Hollow and curved or rounded; vaulted; -- said of the
interior of a curved surface or line, as of the curve of
the of the inner surface of an eggshell, in opposition to
{convex}; as, a concave mirror; the concave arch of the
sky.
[1913 Webster]

2. Hollow; void of contents. [R.]
[1913 Webster]

As concave . . . as a worm-eaten nut. --Shak.
[1913 Webster]


Concave \Con"cave\, n. [L. concavum.]
1. A hollow; an arched vault; a cavity; a recess.
[1913 Webster]

Up to the fiery concave towering hight. --Milton.
[1913 Webster]

2. (Mech.) A curved sheath or breasting for a revolving
cylinder or roll.
[1913 Webster]


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