sma

1. (military, US) Initialism of sergeant major of the army.USabbreviationalt-ofcountableinitialismuncountable

2. (neuroanatomy) Initialism of supplementary motor area.Examples: "To simplify a bit, once having decided, the PFC passes the decision on to the rest of the frontal cortex, which passes it to the premotor cortex, then to the SMA and, a few steps later, on to your muscles."abbreviationalt-ofcountableinitialismuncountable

3. (anatomy) Initialism of superior mesenteric artery.abbreviationalt-ofcountableinitialismuncountable

4. (pathology) Initialism of spinal muscular atrophy.abbreviationalt-ofcountableinitialismuncountable