| 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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