Definition of rhachis. Meaning of rhachis. Synonyms of rhachis

Here you will find one or more explanations in English for the word rhachis. Also in the bottom left of the page several parts of wikipedia pages related to the word rhachis and, of course, rhachis synonyms and on the right images related to the word rhachis.

Definition of rhachis

Rhachis
Rhachis Rha"chis, n.; pl. E. Rhachises, L. Rhachides. [See Rachis.] [Written also rechis.] 1. (Anat.) The spine. 2. (Bot.) (a) The continued stem or midrib of a pinnately compound leaf, as in a rose leaf or a fern. (b) The principal axis in a raceme, spike, panicle, or corymb. 3. (Zo["o]l.) (a) The shaft of a feather. The rhachis of the after-shaft, or plumule, is called the hyporhachis. (b) The central cord in the stem of a crinoid. (c) The median part of the radula of a mollusk. (d) A central cord of the ovary of nematodes.
rhachis
Rachis Ra"chis, n.; pl. E. Rachises, L. Rachides. [NL., fr. Gr. ? ?.] [Written also rhachis.] 1. (Anat.) The spine; the vertebral column. 2. (Bot. & Zo["o]l.) Same as Rhachis.

Meaning of rhachis from wikipedia

- In biology, a rachis /ˈreɪkɪs/ (from the Ancient Gr****: ῥάχις [rhákhis], "backbone, spine") is a main axis or "shaft". In vertebrates, rachis can refer...
- This species was endemic to Mauritius. Mollusc Specialist Group (1996). "Rhachis sanguineus". IUCN Red List of Threatened Species. 1996: e.T19441A8892618...
- Mayotte, an island in the Indian Ocean. Mollusc Specialist Group (1996). "Rhachis comorensis". IUCN Red List of Threatened Species. 1996: e.T19440A8892573...
- ostrich down feather is an example of a plumulaceous feather. Its rudimentary rhachis with long flexible barbs and elongate barbules cannot form vanes....
- edges of leaves are rolled under toward the midrib. Compare involute. rhachis See rachis. rhizodermis the root epidermis, the outermost primary cell...
- Cerastidae. This genus is also spelled as “Rhachis” as a synonym. Rachis is a Latinised version of rhachis (a midrib or ridge) or rhachos (a thorn or...
- Pachnodus curiosus Pachnodus ladiguensis Pachnodus velutinus Rhachis comorensis Rhachis sanguineus Aldabra banded snail (Rhachistia aldabrae) Family Charopidae...
- Rachischisis (Gr****: "rhachis - ῥάχις" - spine, and "schisis - σχίσις" - split) is a developmental birth defect involving the neural tube. This anomaly...
- or spore structures. The leaves are simple, with a strong central vein (rhachis) and an unbroken margin. The central vein leads to nearly perpendicular...
- of 0.5–1.5 cm (0.20–0.59 in)in length standing in the leaf axils. The rhachis is hairy and glandular. The cover sheets overlap, are hairless and only...