relating to, occurring on, or involving one side only: unilateral development; a unilateral approach.
undertaken or done by or on behalf of one side, party, or faction only; not mutual: a unilateral decision; unilateral disarmament.
having only one side or surface; without a reverse side or inside, as a Möbius strip.
Law. pertaining to a contract that can be formed only when the party to whom an offer is made renders the performance for which the offeror bargains. pertaining to a contract in which obligation rests on only one party, as a binding promise to make a gift.
Botany. having all the parts disposed on one side of an axis, as an inflorescence.