Wordiyoconcave
🇬🇧 UK/'kɒnkeiv/🇺🇸 US
TOEFLGREC2
Definitions
adj.
Curved inward like the inside of a bowl or sphere; the opposite of convex.
凹的，凹面的
n.
A concave surface or curve.
凹面，凹形
v.
To make or become concave.
使成凹形
🧩 Root Breakdown
Root-derivedCommon Collocations
- 1.concave surface凹面
- 2.concave lens凹透镜
Example Sentences
- 1.
The concave mirror focuses light rays to a single point, concentrating their energy.