one-way

== English == === Etymology === From one +‎ way. First attested in 1906 in reference to one-way tickets; 1914 in reference to one-way streets; 1940 in reference to one-way mirrors. === Pronunciation === IPA(key): /wʌn.weɪ/, enPR: wŭnʹwāʹ The stress can fall on either syllable, or on each syllable equally, with no distinction in meaning. === Adjective === one-way (not comparable) Allowing movement, vision, etc. in only one direction; unidirectional. Antonyms: two-way, bidirectional one-way mirror Allowing travel in only one direction. Antonyms: round-trip, return (computer science) Of a function: easy to compute for every input, but hard to invert given the image of a random input. ==== Derived terms ==== one-way mirror one-way street one-way ticket ==== Translations ==== === Verb === one-way (third-person singular simple present one-ways, present participle one-waying, simple past and past participle one-wayed) (agriculture) To use a disc harrow to turn the soil and kill weeds, in preparation for planting seeds.