from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The ordinal number matching the number 12 in a series.
- n. One of 12 equal parts.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. The ordinal form of the number twelve, describing a person or thing in position number 12 of a sequence.
- n. One of twelve equal parts of a whole.
- n. An interval equal to an octave plus a fifth
from the GNU version of the Collaborative International Dictionary of English
- adj. Next in order after the eleventh; coming after eleven others; -- the ordinal of twelve.
- adj. Constituting, or being one of, twelve equal parts into which anything is divided.
- n. The quotient of a unit divided by twelve; one of twelve equal parts of one whole.
- n. The next in order after the eleventh.
- n. An interval comprising an octave and a fifth.
from The Century Dictionary and Cyclopedia
- Next in order after the eleventh: an ordinal numeral.
- Being one of twelve equal parts into which a whole is regarded as divided.
- n. One of twelve equal parts of anything; the quotient of unity divided by twelve.
- n. In early English law, a twelfth of the rents of the year, or of movables, or both, granted or levied by way of tax.
- n. In music, a tone twelve diatonic degrees above or below a given tone, or the interval between two such tones; a compound fifth.
- n. In organ-building, a stop giving tones a twelfth above the normal pitch of the digitals used.
- n. Twelfth-day.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. coming next after the eleventh and just before the thirteenth in position
- n. one part in twelve equal parts
- n. position 12 in a countable series of things
Middle English twelfthe, alteration of Old English twelfta; see dwo- in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)