Unilateral definition

yo͝onə-lătər-əl
Of, on, relating to, involving, or affecting only one side.
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Emphasizing or recognizing only one side of a subject.
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The definition of unilateral is something that is done only by one person, that affects only one person, or that is decided only by one person.

An example of something that would be described as unilateral is a decision made by one person in a group without consulting any of the others.

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Having only one side.
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Tracing the lineage of one parent only.

A unilateral genealogy.

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(botany) Having leaves, flowers, or other parts on one side only.
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Of, occurring on, or affecting one side only.
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Involving or obligating one only of several persons or parties; done or undertaken by one only; not reciprocal.

A unilateral contract.

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Taking into account one side only of a matter; one-sided.
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Turned to one side.
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(biol.) Arranged or produced on one side of an axis.
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On, having, or confined to only one side.
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Literally, one-sided; relating to only one of two or more people or things.
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Done by one side only.
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Affecting only one side of the body.
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Binding or affecting one party only.
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Performed or undertaken by only one side.

Unilateral disarmament.

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Obligating only one of two or more parties, nations, or persons, as a contract or an agreement.
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Origin of unilateral

  • A modern creation (c. 1802), from New Latin unilateralis (“one-sidely, one-sided"), from unus (“one") + lateralis (“sided, lateral").

    From Wiktionary