UNILATERAL

unilateral, one-sided

(adjective) involving only one part or side; “unilateral paralysis”; “a unilateral decision”

unilateral

(adjective) tracing descent from either the paternal or the maternal line only

Source: WordNet® 3.1

Etymology

Adjective

unilateral (comparative more unilateral, superlative most unilateral)

Done by one side only.

Affecting only one side of the body.

Binding or affecting one party only.

Source: Wiktionary

U`ni*lat"er*al, a. Etym: [Uni- + lateral: cf. F. unilatéral.]

1. Being on one side only; affecting but one side; one-sided.

2. (Biol.)

Definition: Pertaining to one side; one-sided; as, a unilateral raceme, in which the flowers grow only on one side of a common axis, or are all turned to one side. Unilateral contract (Law), a contract or engagement requiring future action only by one party.

Source: Webster’s Unabridged Dictionary 1913 Edition