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单词 protriæne
释义 protriæne Zool.|ˈprəʊtraɪˌiːn|
[f. pro-2 + triæne.]
In sponges, a triæne whose three prongs or cladi project forwards from the shaft.
1887Sollas in Encycl. Brit. XXII. 417/1 (Sponges) The arms make different angles with the shaft: when recurved a grapnel or anatriæne is produced, when projecting forwards a protriæne, and when extended at right angles an orthotriæne.
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更新时间:2024/9/20 5:48:49