polyp

詳細解釋：

pol.yp

n.（名詞）
A coelenterate, such as a hydra or coral, having a cylindrical body and an oral opening usually surrounded by tentacles.
水螅型珊瑚蟲，水螅蟲：一種有柱狀身體和通常被觸角包圍的口部開口的腔腸動物，比如水螅或珊瑚蟲
A usually nonmalignant growth or tumor protruding from the mucous lining of an organ such as the nose, bladder, or intestine, often causing obstruction.
息肉：一種通常為非惡性的增生或腫瘤，從象鼻子、膀胱或腸這類器官的內層黏膜上突出來

來源：
Middle English polip [nasal tumor]
中古英文 polip [鼻部腫瘤]
from Old French polipe
源自 古法文 polipe
from Latin pôlypus [cuttlefish, nasal tumor]
源自 拉丁語 pôlypus [烏賊，鼻部腫瘤]
from Greek polupous probably by folk etymology from polus [many] * see poly- pous [foot] * see ped-
源自 希臘語 polupous 可能源自 polus的民間詞源 [許多] *參見 poly- pous [足，腳] *參見 ped-

【引伸】
pol.ypoid.
adj.（形容詞）