(US) A nine-digit number issued to citizens, permanent residents, and temporary (working) residents under section 205(c)(2) of the Social Security Act, codified as 42 U.S.C. § 405(c)(2). The number is issued to an individual by the Social Security Administration. Its primary purpose is to track individuals for taxation purposes. Abbreviated as SSN. In recent years the SSN has become a de facto national identification number.

(idiomatic, often humorous) A human being.

Not for the moment, though expected later. / Not quite; not exactly.

(Canada, US, music) A semibreve, a musical note four beats long in 4/4 time.

A town in Newfoundland, Newfoundland and Labrador, Canada.

(genetics) The number of copies of a gene or plasmid within a cell's genome. / (library science) The identification number assigned to a specific copy of a work.

A condition of discharge of mucus from the nose, often a symptom of the common cold.

Alternative spelling of nonrepudiation

plural of non-repudiation

(euphemistic, typically of women) To visit a lavatory to use a toilet, reapply makeup, (when used of a group of women) engage in private conversation, etc.