plural of S-wave

plural of s-aorist

plural of s-perfect

(linguistics) An aorist stem of an Old Latin verb which has been formed by adding an s to the end of the present stem; the ancestor of the Classical s-perfect.

(linguistics) A perfect stem of a Latin verb which has been formed by adding an s to the end of the present stem.

A subgenre of science fiction fanfiction where the Star Trek characters Kirk and Spock are shown in a homosexual relationship. Often attributive.

Alternative form of SF

plural of A.U. (astronomical units)

Alternative form of BS

(law) Abbreviation of South Africa.