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2025-09-10

“oro-anal”的英英意思

单词

oro-anal

释义

oro-anal, a.|ˌɔərəʊˈeɪnəl|
[irreg. f. L. ōs, ōr- mouth + anal.]
1. That serves both as mouth and anus, as the single orifice of the digestive system of the star-fish.
1872Nicholson Palæont. 131 The question is narrowed to its being the anus alone, or an ‘oro-anal’ orifice.
2. Extending in the direction from mouth to anus.
1885Ray Lankester in Encycl. Brit. XIX. 434/2 A new long axis is..established at right angles to the original oro-anal axis.