单词 | rachis |
释义 | Word Frequency rachis or rhachis (ˈreɪkɪs) nounWord forms: plural rachises, rhachises, rachides or rhachides (ˈrækɪˌdiːz, ˈreɪ-) 1. botany the main axis or stem of an inflorescence or compound leaf 2. ornithology the shaft of a feather, esp the part that carries the barbs 3. another name for spinal column Derived forms rachial or rhachial (ˈreɪkɪəl), rachidial or rhachidial (rəˈkɪdɪəl) adjective Word origin C17: via New Latin from Greek rhakhis ridge |
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