| 单词 | pentacrinoid |
| 释义 | Pentacrinus /pen-takˈrin-əs/nounA genus of fossil crinoids, in the form of a feathery five-rayed star on a long pentagonal stalk ORIGIN: penta- and Gr krinon lily pentacˈrinoid adjective Like or related to Pentacrinus nounA young form of some crinoids that resembles Pentacrinus |
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