(obsolete, zoology, anatomy) The spinal column, or the vertebrae of the spine. / (zoology) An anatomical shaft or axis in a marine invertebrate. / (ornithology) The central shaft of a feather.

(medicine, anatomy) Of or pertaining to the back.

(medicine) Rickets. / (botany) A disease that produces abortion in the fruit.

(medicine, rare) A device for measuring spinal curvature.

(medicine) Pertaining to or affected by rickets. / Feeble, in a weak or precarious condition.

plural of rachis

plural of rachis

(surgery) The surgical procedure of cutting, or making an incision in a vertebra.

plural of rachiometer

plural of rachilla