something that bulges out or is protuberant or projects from its surroundings;
"the gun in his pocket made an obvious bulge" "the hump of a camel" "he stood on the rocky prominence" "the occipital protuberance was well developed" "the bony excrescence between its horns"
the act of projecting out from something
例句
用作名词(n.)
Thumb-sucking can cause protrusion of the teeth.经常吮吸拇指能使牙齿向外突出。
