sigma

The drugs either targeted the sigma receptors or they stopped the virus from growing.

Lohse rushes Sigma Alpha Epsilon, gets a bid, endures pledge term, and then submits to the dehumanizing rigors of Hell Night.

Pledging, also known as initiation, will now be abolished by Sigma Alpha Epsilon nationally across its 240 chapters.

For example, what business has the letter rho in the word katoptron, or the letter sigma in the word sphigx?

All of them wore, in addition to their temple knives, holstered sigma-ray needlers.

He drew his hand from under the left side of the senseless man's robe and held up a sigma-ray needler.

Sigma, sig′ma, n. the Greek letter corresponding to our s—written Σ (capital), σ (small initial) or ς (small final).

It is to be observed that the Grecians in foreign words continually omitted the Nu final, and substituted a Sigma.