con·stit·u·ent
noun/kənˈstɪtʃuənt/
/kənˈstɪtʃuənt/
- a person who lives in and can vote in a constituency
（选区的）选民，选举人 - She has the full support of her constituents.
她得到本区选民的全力支持。
- She has the full support of her constituents.
- one of the parts of something that combine to form the whole
成分；构成要素 - Silicon and oxygen are the fundamental constituents of rocks in the earth’s crust.
硅和氧是地壳岩石的基本成分。 - Tar is a harmful constituent of tobacco smoke.
焦油是烟草烟雾中的有害成分。 - Vitamins are natural food constituents which are essential in helping to maintain good health.
维生素是天然食品成分，对于保持身体健康至关重要。
- Silicon and oxygen are the fundamental constituents of rocks in the earth’s crust.
Word Originlate 15th cent. (as a noun denoting a person who appoints another as agent): from Latin constituent- (partly via French constituant) ‘establishing, appointing’, from the verb constituere, from con- ‘together’ + statuere ‘set up’.