rachis: Meaning and Definition of
Pronunciation: (rā'kis), [key]
— pl. ra•chis•es, rach•i•des
- the axis of an inflorescence when somewhat elongated, as in a raceme.
- (in a pinnately compound leaf or frond) the prolongation of the petiole along which the leaflets are disposed.
- any of various axial structures.
- the part of the shaft of a feather bearing the web. See illus. under
- rachis (Thesaurus)