vestigial
US /vesˈtɪdʒ.i.əl/
UK /vesˈtɪdʒ.i.əl/
形容词
残余的, 退化的
forming a small remnant of something that was once much larger or more noticeable
示例:
•
The appendix is a vestigial organ in humans.
阑尾是人类的退化器官。
•
The small, almost invisible wings of some flightless birds are vestigial.
一些不会飞的鸟类的小而几乎看不见的翅膀是退化的。