noun, Mathematics, Physics.
a quantity resembling a vector or tensor that is used in physics to represent the spins of fermions.
- Spinothalamic tract
spinothalamic tract spi·no·tha·lam·ic tract (spī’nō-thə-lām’ĭk) n. A large ascending bundle of fibers in the ventral half of the lateral funiculus of the spinal cord, arising in the posterior horn at all levels of the cord and continuing into the brainstem. It is composed in the spinal cord of a lateral part that conveys impulses associated […]
adjective 1. covered with or having spines; thorny, as a plant. 2. armed with or bearing sharp-pointed processes, as an animal. 3. spinelike. adjective (biology) 1. resembling a spine or thorn: the spinous process of a bone 2. having spines or spiny projections 3. another word for spinose spinous spi·nous (spī’nəs) adj. Relating to, shaped […]
- Spinous layer
spinous layer n. See prickle cell layer.
noun, Anatomy, Zoology. 1. a spinelike process of a bone, especially the dorsal projection from the center of the arch of a vertebra. spinous process n. See sphenoidal spine. The dorsal projection from the center of a vertebral arch.