"to count, enumerate," 1721, from Latin numeratus, past participle of numerare "to count, to number," from numerus "a number" (see number (n.)). Related: Numerated; numerating.

"state of being numerous," 1610s, from Latin numerositatem (nominative numerositas) "a great number, a multitude," from numerosus "numerous," from numerus "a number" (see number (n.)).

1788, "pertaining to numbering or numeration," from Latin numerat-, past-participle stem of numerare "to count, number," from numerus "a number" (see number (n.)) + -ive. Related: Numeratively.

late 14c., a contraction of penies, collective plural of penny. Spelling with -ce reflects the voiceless pronunciation (compare dice (n.), deuce, hence). After the introduction of decimal currency in Britain in 1971, it began to be used in singular (one pence).

early 15c., "consisting of a large number," from Latin numerosus "numerous," from numerus "a number" (see number (n.)). Related: Numerously; numerousness.

1540s, "word or figure by which the number of something is denoted" (a sense now obsolete), from Late Latin numerator "counter, numberer," agent noun from numerat-, past-participle stem of numerare "to count, number," from numerus "a number" (see number (n.)). From 1570s as "the number written above the line in a fraction," by 1670s as "one who or that which numbers."

"computer operating system using a disk storage device," 1967, acronym of disk operating system.

1520s, "word expressing a number," from French numéral (15c.), from Late Latin numeralis "of or belonging to a number," from Latin numerus "a number" (see number (n.)). Meaning "figure or character standing for a number" is from 1680s. As an adjective, "expressing number," from late 14c.

Old English numerals past 20 (e.g. seofan and twentig) were formed as in modern German; the modern English pattern likely is from influence of French (vingt-sept).

acronym for personal identification number, 1981; from the first it has been used with a redundant number.