名詞 excrescence:

1. something that bulges out or is protuberant or projects from its surroundings
   同義詞：bulge, bump, hump, gibbosity, gibbousness, jut, prominence, protuberance, protrusion, extrusion
2. (pathology) an abnormal outgrowth or enlargement of some part of the body

ex.cres.cence

n.（名詞）
An abnormal outgrowth or enlargement, such as a wart.
贅疣：一種不正常的增長(zhǎng)或擴(kuò)大，例如疣
A normal outgrowth, such as a fingernail or a beard.
自然長(zhǎng)出物：正常的生長(zhǎng)，如指甲或胡須
A usually unwanted or unncessary accretion:
多余物：通常不想要的或不必要的增長(zhǎng)：
例句：
.Independent agencies were an excrescence on the Constitution.(Los Angeles Times)
.獨(dú)立的代理處是憲法不需要的東西.(洛杉磯時(shí)報(bào))

來(lái)源：
Middle English
中古英語(yǔ)
from Latin excrôscentia
源自 拉丁語(yǔ) excrôscentia
from neuter pl. of excrôscôns excrôscent- [present participle of] excrôscere [to grow out]
源自 excrôscôns的中性復(fù)數(shù) excrôscent- [] excrôscere的現(xiàn)在分詞 [長(zhǎng)得太大而不能]
ex- [ex-]
ex- [前綴，表.從前的，前任的.]
crôscere [to grow] * see ker- 2
crôscere [生長(zhǎng)] *參見(jiàn) ker- 2