rhachis plural
rha·chis
The plural form of rhachis is rhachises
R rDefinitions
- noun plural rhachis Botany. 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. 1
- noun plural rhachis Ornithology. the part of the shaft of a feather bearing the web. 1
- noun plural rhachis Anatomy. spinal column. 1