sigma
/ˈsɪɡmə/
Word Rarity
Rare
Frequency: Zipf frequency 3.51 in modern English
8
Scrabble Score
5
Letters
2
Syllables
5
Unique Chars
Meaning
noun
The eighteenth letter of the Classical and Modern Greek alphabets (Σ, σ), the twentieth letter of Old and Ancient.
noun
The symbol σ, used to indicate one standard deviation from the mean, particularly in a normal distribution.
noun
A sigma male (a self-reliant and assertive male).
adj
name
A municipality of Capiz, Philippines.
Example Sentences
- "Their names, which are expressive of some bodily or mental excellence, all end with the same letter---the letter which is called San by the Dorians, and Sigma by the Ionians."
- "2011, Paul Rincon, (bbc.co.uk) LHC: Higgs boson 'may have been glimpsed' None of the spikes seen by the experiments is at much more than the "two sigma" level of certainty. A level of "five sigma" is required to claim a discovery, meaning there is less than a one in a million chance the data spike is down to a statistical fluke."