sigma

[ sig-muh ]

noun

1. the 18th letter of the Greek alphabet: Σ, σ, ς.
2. the consonant sound represented by this letter.

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

sigma

/ sĭg′mə /

1. A sigma baryon.

Word History and Origins

Origin of sigma¹

First recorded in 1600–10; from Latin, from Greek sígma

Word History and Origins

Origin of sigma¹

Greek, of Semitic origin; related to Hebrew samekh

Example Sentences

Sigma Gamma Rho sorority sisters sported blue and gold dresses.

From Salon

"In our social justice, which is one of our tenets that we have, sisterhood, I think for us, we feel like we helped push and lifted this tide up and make it happen a little sooner than it normally would," said Grace Carrington, the director of the Democratic National Committee's Southern Region and a proud member of Delta Sigma Theta.

From Salon

The vice president addressed her sorority sisters at the organization's biennial national convention, or boulé, just ahead of her campaign's launch and gave remarks at the Sigma Gamma Rho boulé in July.

From Salon

Carolyn Williams, a member of Sigma Gamma Rho and the executive detail for the sorority's international grand basileus, said Harris' AKA roots provide a sign of what Americans can expect from her presidency should she be elected.

From Salon

"She came from the same roots that we came from, which is stemmed from community service, and we know that she'll be focused in on taking care of the people — all the people," Williams told Salon, the blue rhinestones of her gold Sigma pin catching the United Center lights.

From Salon