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