to shorten (a word or phrase) by omitting letters, substituting shorter forms, etc., so that the shortened form can represent the whole word or phrase, as ft. for foot, ab. for about, R.I. for Rhode Island, NW for Northwest, or Xn for Christian.
2.
to reduce (anything) in length, duration, etc.; make briefer: to abbreviate a speech.
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
an extraordinary or unusual thing, person, or event; an exceptional example or instance.
the offspring of a zebra and a donkey.
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
mid-15c., from L. abbreviatus, pp. of abbreviare "to shorten" (see abbreviation). Also sometimes 15c. abbrevy, from M.Fr. abrevier (14c.), from L. abbreviare. Related: Abbreviated; abbreviating.