twelve-tone row or twelve-note row see under twelve

twelve /twelv/

1. The cardinal number next above eleven
2. A symbol representing that number (12, xii, etc)
3. A set of twelve things or people
4. A score of twelve points, strokes, tricks, etc
5. An article of a size denoted by 12
6. (in pl) duodecimo
7. (12) a certificate designating a film passed as suitable only for people of twelve years and over
8. The hour of midnight or midday
9. The age of twelve years

1. Of the number twelve
2. Twelve years old

twelveˈfold adjective and adverb

twelveˈmo noun (pl twelveˈmos)

Duodecimo, written 12mo

twelve-hour clock noun

A method of reckoning time by two successive periods of twelve hours, beginning again at 1 after 12 noon

twelveˈmonth noun

A year

twelveˈ-penny adjective

Shilling

twelve score noun

Two hundred and forty (yards)

twelveˈ-step adjective (chiefly US)

Relating to a process of recovery from addiction that involves twelve stages

Twelve Tables plural noun

The earliest code of Roman law, civil, criminal and religious, made by the decemvirs in 451–449BC

twelveˈ-tone or twelveˈ-note adjective

Relating to music based on a pattern formed from the twelve notes of the chromatic scale, esp as developed by Arnold Schönberg (1874–1951) and his pupils (twelve-tone row or twelve-note row being the basic pattern of notes; see also series and serial)

the Twelve (Bible)

The twelve apostles