flexion

名词 flexion:

1. the state of being flexed (as of a joint)
   同义词：flexure, flection
2. deviation from a straight or normal course
   同义词：inflection, flection
3. act of bending a joint; especially a joint between the bones of a limb so that the angle between them is decreased
   同义词：flexure

flex.ion

n.（名词）
Also flec.tion Anatomy
也作 flec.tion 【解剖学】
The act of bending a joint or limb in the body by the action of flexors.
屈体：通过屈肌运动而弯曲身体关节或四肢的行为
The resulting condition of being bent.
弯曲的状态
A part that is bent.
弯曲：弯曲的部分

来源：
Latin flexiô flexiôn- [a bending]
拉丁语 flexiô flexiôn- [弯曲]
from flexus [past participle of] flectere [to bend]
源自 flexus [] flectere的过去分词 [弯曲]