U`ni*lat"er*al (?), a. [Uni- + lateral: cf. F. unilat'eral.]
1.
Being on one side only; affecting but one side; one-sided.
2. Biol.
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.
© Webster 1913.