SPINA BIFIDA
Spi"na bif"i*da. (Med.) Etym: [L., cleft spine.]

Defn: A congenital malformation in which the spinal column is cleft at its lower portion, and the membranes of the spinal cord project as an elastic swelling from the gap thus formed.

SPINACEOUS
Spi*na"ceous, a. (Bot.)

Defn: Of, pertaining to, or resembling, the plant spinach, or the family of plants to which it belongs.

SPINACH; SPINAGE Spin"ach, Spin"age, n. Etym: [OF. espinache, espinoche, F. épinard; cf. F. spinace, Sp. espinaca; all fr. Ar. isfanaj, isfinaj, aspanakh, probably of Persian origin.] (Bot.)

Defn: A common pot herb (Spinacia oleracea) belonging to the
Goosefoot family. Mountain spinach. See Garden orache, under Orache.
— New Zealand spinach (Bot.), a coarse herb (Tetragonia expansa), a
poor substitute for spinach.

Note: Various other pot herbs are locally called spinach.

SPINAL
Spi"nal, a. Etym: [L. spinalis, fr. spina the spine: cf. F. spinal.
See Spine.]

1. (Anat.)

Defn: Of, pertaining to, or in the region of, the backbone, or vertebral column; rachidian; vertebral.