名詞 protrusion:

1. something that bulges out or is protuberant or projects from its surroundings
   同義詞：bulge, bump, hump, gibbosity, gibbousness, jut, prominence, protuberance, extrusion, excrescence
2. the act of projecting out from something
   同義詞：projection, jut, jutting

1. Thumb-sucking can cause protrusion of the teeth.
   經(jīng)常吮吸拇指能使牙齒向外突出。

pro.tru.sion

n.（名詞）

The act of protruding.
伸出：伸出的動(dòng)作
The state of being protruded.
突出：被伸出的狀態(tài)
Something that protrudes.
突出體：突出的物體

來(lái)源：
Latin prôtrôsus [past participle of] prôtrôdere [to protrude] * see protrude
拉丁語(yǔ) prôtrôsus [] prôtrôdere的過(guò)去分詞 [伸出] *參見 protrude
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