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单词 concavely
释义

WordReference Random House Learner's Dictionary of American English © 2024
con•cave /kɑnˈkeɪv, ˈkɑnkeɪv/USA pronunciation   adj. 
  1. Mathematicscurved inward like the inside of a sphere:a concave lens.Compare convex.
con•cave•ly, adv. 
con•cave•ness, n. 
con•cav•i•ty/kɑnˈkævɪti/USA pronunciation  ; n. [uncountable* countable], pl. -ties. 

WordReference Random House Unabridged Dictionary of American English © 2024
con•cave  (adj., v. kon kāv′, kon′kāv;n. kon′kāv),USA pronunciation adj., n., v., -caved, -cav•ing. 
adj. 
  1. Mathematicscurved like a segment of the interior of a circle or hollow sphere;
    hollow and curved. Cf. convex (def. 1).
  2. Mathematics[Geom.](of a polygon) having at least one interior angle greater than 180°.
  3. [Obs.]hollow.

n. 
  1. Mathematicsa concave surface, part, line, or thing.
  2. Mechanical Engineering[Mach.]a concave piece, as one against which a drum rotates.

v.t. 
  1. to make concave.
  • Latin concavus, hollow. See con-, cave
  • Middle French)
  • late Middle English (1375–1425
con•cave′ly, adv. 
con•cave′ness, n. 
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更新时间：2025/2/23 0:50:55