"Rachis" is a word in ENGLISH

of Rhachis

Of or pertaining to the rhachis; as, the rhachidian teeth of a mollusk.

The spine.

The continued stem or midrib of a pinnately compound leaf, as in a rose leaf or a fern.

The central cord in the stem of a crinoid.

The principal axis in a raceme, spike, panicle, or corymb.

A central cord of the ovary of nematodes.

The shaft of a feather. The rhachis of the after-shaft, or plumule, is called the hyporhachis.

The median part of the radula of a mollusk.

of Rhachis

Having bipinnate leaflets arranged on each side of a rhachis.

The rhachis and web of a feather taken together.

The rhachis and web of a feather taken together; the vane.

Any one of numerous species of long, slender Alcyonaria belonging to Virgularia and allied genera of the family Virgularidae. These …