follow Dictionary.com

11 Trending Words of 2014

sigma

[sig-muh] /ˈsɪg mə/
noun
1.
the 18th letter of the Greek alphabet: Σ, σ, ς.
2.
the consonant sound represented by this letter.
Origin
1600-1610
1600-10; < Latin < Greek sígma
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
British Dictionary definitions for ς

sigma

/ˈsɪɡmə/
noun
1.
the 18th letter in the Greek alphabet (Σ, σ, or, when final, ς), a consonant, transliterated as S
2.
(maths) the symbol Σ, indicating summation of the numbers or quantities indicated
Word Origin
Greek, of Semitic origin; related to Hebrew samekh
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
Word Origin and History for ς

sigma

18th letter of the Greek alphabet, corresponding to Latin S, a metathesis of Hebrew samekh. In uncial writing, shaped like an S or a C.

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
ς in Medicine

ς

  1. The Greek letter sigma. Entries beginning with this character are alphabetized under sigma.

  2. The symbol for reflection coefficient.

  3. The symbol for standard deviation.

sigma sig·ma (sĭg'mə)
n.

Symbol ς The 18th letter of the Greek alphabet.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
ς in Science
sigma
  (sĭg'mə)   
A sigma baryon.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source

Word of the Day

Difficulty index for sigma

Many English speakers likely know this word

Word Value for ς

0
0
Scrabble Words With Friends

Nearby words for ς