abbreviatev. t.[L. abbreviatus, p. p. of abbreviare; ad + breviare to shorten, fr. brevis short. See Abridge.]1. To make briefer; to shorten; to abridge; to reduce by contraction or omission, especially of words written or spoken.()It is one thing to abbreviate by contracting, another by cutting off. (Bacon.)2. (Math.) To reduce to lower terms, as a fraction.()a.[L. abbreviatus, p. p.]1. Abbreviated; abridged; shortened.(Earle.)2. (Biol.) Having one part relatively shorter than another or than the ordinary type.()n. An abridgment.(Elyot.)