vestigial
US /vesˈtɪdʒ.i.əl/
UK /vesˈtɪdʒ.i.əl/
形容詞
殘餘的, 退化的
forming a small remnant of something that was once much larger or more noticeable
範例:
•
The appendix is a vestigial organ in humans.
闌尾是人類的退化器官。
•
The small, almost invisible wings of some flightless birds are vestigial.
一些不會飛的鳥類的小而幾乎看不見的翅膀是退化的。