Dictionary.net

Next in order after the eleventh; coming after eleven others; -- the ordinal of twelve.

Consisting, or being one of, twelve equal parts into which anything is divided.

The quotient of a unit divided by twelve; one of twelve equal parts of one whole.

The next in order after the eleventh.

An interval comprising an octave and a fifth.

Next in order after the eleventh.

One of twelve equal parts; the ordinal of twelve.

The last of twelve.

The ordinal of twelve.

Second in order after the tenth.