Webster's Revised Unabridged Dictionary · 1913

Abbreviate

Abbreviate (ab*brē"vi*āt) , transitive verb

[Latin abbreviatus, past participle of abbreviare; ad + breviare to shorten, from 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.
(Mathematics) To reduce to lower terms, as a fraction.

Abbreviate (ab*brē"vi*at) , adjective

[Latin abbreviatus, p. p.]

1.
Abbreviated; abridged; shortened. [Rare]
The abbreviate form. — Earle
2.
(Biology) Having one part relatively shorter than another or than the ordinary type.

Abbreviate , noun

An abridgment. [Obsolete] — Elyot