RHACHIS
- a. the axis of an inflorescence when somewhat elongated, as in a raceme b. (in a pinnately compound leaf or frond) the prolongation of the petiole along which the leaflets are disposed c. any of various axial structures
- rachis (the spinal column) [n RHACHIDES, RHACHISES]
- the part of the shaft of a feather bearing the web
- the spinal column, also RACHIS [n RHACHISES or RHACHIDES]