acronym for personal identification number, 1981; from the first it has been used with a redundant number.
"capable of being counted or reckoned," 1570s, from Latin numerabilis "that can be counted or numbered," from numerare "to count, number," from numerus "a number" (see number (n.)). Related: Numerably.
a line or hooked line used to separate printed figures, originally with numerals and used where modern texts use a decimal point, 1650s, from Late Latin (linea) separatrix, feminine of separator, agent noun from separare "to pull apart" (see separate (v.)). It survives in proofreading.
"to count; ascertain or tell over the number of;" hence, "mention in detail, recapitulate," 1640s, from or modeled on Latin enumeratus, past participle of enumerare "to reckon up, count over, enumerate," from assimilated form of ex "out, out of" (see ex-) + numerare "to count, number," from numerus "number" (see number (n.)). Middle English had annumerate (early 15c.). Related: Enumerated; enumerating.
early 15c., numeracioun, "method or process of numbering or calculating," from Latin numerationem (nominative numeratio) "a counting out, paying, payment," noun of action from past-participle stem of numerare "to count, number," from numerus "number" (see number (n.)). Meaning "act or process of counting the number of" is from mid-15c.