sigma
0 synonyms and 0 antonyms for sigma, grouped by meaning and by how common each one is.
Noun — The eighteenth letter of the Greek alphabet (Σ, σ).
We haven't recorded synonyms for sigma yet. You can still read its full definition, where it comes from, or words that rhyme with it.
Etymology
From Ancient Greek sigma, likely from a root associated with hissing sounds, referencing the letter's "s" sound.
Full origin of sigma →Frequently asked questions
What does “sigma” mean?
The word “sigma” means the eighteenth letter of the Greek alphabet (Σ, σ). In plain terms, a Greek letter used heavily in maths and science for summation and standard deviation, and, in recent internet slang, a personality-type label.
How do you pronounce “sigma”?
“Sigma” is pronounced SIHG-muh (/ˈsɪɡmə/ in IPA).
How do you use “sigma” in a sentence?
Here is “sigma” used in a sentence: “Sigma appears in the equation as the summation symbol.”
What part of speech is “sigma”?
“Sigma” is a noun.
Where does the word “sigma” come from?
The word “sigma” comes from Ancient Greek. From Ancient Greek sigma, likely from a root associated with hissing sounds, referencing the letter's "s" sound.
Is “sigma” a common word?
“Sigma” is an uncommon word in modern English.
How many meanings does “sigma” have?
“Sigma” has 3 distinct senses listed in this dictionary. The most common is: the eighteenth letter of the Greek alphabet (Σ, σ).