instant

adj. instantáneo

s. instante, fracción de segundo, momento, santiamén

s.- momento, presente
adj.- instantáneo, urgente
adv.- instantáneamente, inmediatamente, rápidamente

Ex: Set against the span of human existence, the five-hundred-year-history of the printed book is but an instant.
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*at the same instant = al mismo tiempo, a la vez
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*at every instant = en todo momento
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*in an instant or two = en uno o dos segundos
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*instant in time = momento

Ex: There is already a large and growing number of commercial data bases that allow the individual or corporate consumer to gain instant access to need information.
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*instant coffee = café instantáneo

instante

(n.) = instante
Ex: Set against the span of human existence, the five-hundred-year-history of the printed book is but an instant.
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* at every instant = en todo momento
* at the same instant = al mismo tiempo, a la vez
* in an instant or two = en uno o dos segundos, en un par de segundos
* instant in time = momento

(adj.) = instantáneo, inmediato
Ex: There is already a large and growing number of commercial data bases that allow the individual or corporate consumer to gain instant access to need information.
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* instant coffee = café instantáneo
* instant gratification = gratificación inmediata, satisfacción inmediata
* instant messaging = mensajería instantánea
* instant soup = sopa de sobre