a small vascular growth on the surface of a mucous membrane
one of two forms that coelenterates take (e.g. a hydra or coral): usually sedentary with a hollow cylindrical body usually with a ring of tentacles around the mouth;
"in some species of coelenterate, polyps are a phase in the life cycle that alternates with a medusoid phase"
例句
用作名词 (n.)
Coral is formed by certain types of polyp. 珊瑚是由某些水螅体构成的。
Preventive reception of colonic polyp is still the best treatment. 结肠息肉预防性切除仍是最好的治疗方法。
经典引文
The starfish eat the tiny polyps which build up the coral.