sig·ma (sĭg'mə) n.
[Greek sīgma, of Phoenician origin; see smk in Semitic roots.] sig'mate' (-māt') adj. |
sigma sig·ma (sĭg'mə)
n.
Symbol ς The 18th letter of the Greek alphabet.
| sigma (sĭg'mə) Pronunciation Key
A sigma baryon. |
SIGMA
A scientific visual programming environment from NASA.
(http://fi-www.arc.nasa.gov/fia/projects/sigma/).