rachis

English Thesaurus

1. the series of vertebrae forming the axis of the skeleton and protecting the spinal cord (noun.body)

hypernym	:	skeletal structure,
definition	:	any structure created by the skeleton of an organism (noun.body)

hyponym	:	notochord,
definition	:	a flexible rodlike structure that forms the supporting axis of the body in the lowest chordates and lowest vertebrates and in embryos of higher vertebrates (noun.animal)

hyponym	:	chine,
definition	:	backbone of an animal (noun.animal)

part holonym	:	canalis vertebralis, spinal canal, vertebral canal,
definition	:	the canal in successive vertebrae through which the spinal cord passes (noun.body)

part holonym	:	coccyx, tail bone,
definition	:	the end of the vertebral column in humans and tailless apes (noun.body)

part holonym	:	vertebra,
definition	:	one of the bony segments of the spinal column (noun.body)

part holonym	:	intervertebral disc, intervertebral disk,
definition	:	a fibrocartilaginous disc serving as a cushion between all of the vertebrae of the spinal column (except between the first two) (noun.body)

part meronym	:	axial skeleton,
definition	:	the part of the skeleton that includes the skull and spinal column and sternum and ribs (noun.body)

2. axis of a compound leaf or compound inflorescence (noun.plant)

hypernym	:	axis,
definition	:	the main stem or central part about which plant organs or plant parts such as branches are arranged (noun.plant)

3. the series of vertebrae forming the axis of the skeleton and protecting the spinal cord (noun.body)

derivation	:	spinal,
definition	:	of or relating to the spine or spinal cord (adj.pert)

derivation	:	spinal,
definition	:	of or relating to the spine or spinal cord (adj.pert)