unidirectional.
Pertaining to only one direction, e.g.: where all component parts are aligned in the same direction in space.
Meaning & usage
Pertaining to only one direction, e.g.: where all component parts are aligned in the same direction in space.
Not subject to change or reversal of direction.
Where this word comes from
Etymology tree Proto-Indo-European *ís? Proto-Indo-European *h₁óynos Proto-Italic *oinos Old Latin oinos Latin ūnus Latin ūni-der. English uni- English direction English -al English directional English unidirectional From uni- + directional.
A fabric in which the majority of fibers run in the same single direction.
Where this word comes from
Etymology tree Proto-Indo-European *ís? Proto-Indo-European *h₁óynos Proto-Italic *oinos Old Latin oinos Latin ūnus Latin ūni-der. English uni- English direction English -al English directional English unidirectional From uni- + directional.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.