The form of the Greek letter sigma only ever used as the last letter of a word: ς.

(aviation) The last section of an aircraft's approach to a runway.

(journalism) the edition of a newspaper that includes the last version of the sports results to be published for the day (or time block); frequently this is the last edition for the newspaper for the day (or time block)

plural of Final Four

(historical) The planned and attempted mass murder of the European Jews by the Nazis; the Holocaust. / Used other than figuratively or idiomatically: see final, solution.

(aviation) The last part of a landing before touchdown, involving a descending flight path directly in the direction of the runway.

plural of quarter-final

Alternative form of wordfinal

plural of final class

(object-oriented programming) A class that cannot be subclassed.