名詞 cyclostome:

1. primitive aquatic vertebrate

cy.clo.stome

n.（名詞）
Any of various primitive eellike vertebrates of the class Agnatha, such as a lamprey, lacking jaws and true teeth and having a circular, sucking mouth.
圓口綱脊椎動(dòng)物：一種類似鰻魚(yú)的無(wú)顎綱原始脊椎動(dòng)物，如盲鰻，沒(méi)有下顎和真正的牙齒，而長(zhǎng)著圓形吮吸的嘴

來(lái)源：
From New Latin Cyclostomo
源自 現(xiàn)代拉丁語(yǔ) Cyclostomo
Cyclostomata [class names]
Cyclostomata [綱名]
cyclo-
cyclo-
Greek stoma stomat- [mouth]
希臘語(yǔ) stoma stomat- [嘴]

【引伸】
cyclos.tomate.