S-t Definition

letter

The nineteenth letter of the English alphabet, called ess and written in the Latin script.

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numeral

The ordinal number nineteenth, derived from this letter of the English alphabet, called ess and written in the Latin script.

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noun

American Library Association. Abbreviation for sextodecimo, a book size, 15-17.5 cm in height.

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abbreviation
Abbreviation of "subject to", used in optimisation problems.
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(mathematics) Abbreviation of "such that".
Given r s.t. r<n...
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(chiefly grammar and lexicography) Something.

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