Word Meaning

Meaning of rhachis

- The spine.
- The continued stem or midrib of a pinnately compound leaf, as in a rose leaf or a fern.
- The principal axis in a raceme, spike, panicle, or corymb.
- The shaft of a feather. The rhachis of the after-shaft, or plumule, is called the hyporhachis.
- The central cord in the stem of a crinoid.
- The median part of the radula of a mollusk.
- A central cord of the ovary of nematodes.