Dictionary
2 ENTRIES FOUND:

sigma

noun sig·ma \ˈsig-mə\

: the 18th letter of the Greek alphabet

Full Definition of SIGMA

1
:  the 18th letter of the Greek alphabet — see alphabet table

Origin of SIGMA

Greek
First Known Use: 1584

Rhymes with SIGMA

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March 29, 2015
discomfit Hear it
To thwart or disconcert
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