adjective 1. below standard or less than adequate: substandard housing conditions. 2. noting or pertaining to a dialect or variety of a language or a feature of usage that is often considered by others to mark its user as uneducated; nonstandard. 3. Insurance. not measuring up to an insurer’s regular standards in undertaking risks: a […]
substantia sub·stan·ti·a (sŭb-stān’shē-ə) n. pl. -ti·æt (-shē-ē’) Substance.
- Substantia alba
substantia alba substantia al·ba (āl’bə) n. See white matter.
- Substantia gelatinosa
substantia gelatinosa substantia ge·lat·i·no·sa (jə-lāt’n-ō’sə, jěl’ə-tn-ō’sə) n. The apical part of the posterior horn of the gray matter of the spinal cord, composed largely of very small nerve cells and whose gelatinous appearance is due to its very low content of myelinated nerve fibers. It functions in the integration of sensory stimuli that give rise […]