单词	leptocardian
释义	> as lemmas leptocardian Categories » leptocardian adj. and n. Brit. /ˌlɛptə(ʊ)ˈkɑːdɪən/ , U.S. /ˌlɛptoʊˈkɑrdiən/ , /ˌlɛptəˈkɑrdiən/ [Greek καρδία heart] Zoology (a) adj. belonging to the Leptocardii, the lowest group of true vertebrates, having contractile pulsating sinuses instead of a heart; (b) n. a vertebrate belonging to this group ( Cent. Dict. 1889). extracted from lepto-comb. form < as lemmas
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