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"
polyp的用法和样例:
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。