01 adv. At what time; -- used interrogatively.
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1.
At what time; -- used interrogatively.“When shall these things be?” — Matt. xxiv. 3.
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2.
At what time; at, during, or after the time that; at or just after, the moment that; -- used relatively.“Kings may Take their advantage when and how they list.” — Daniel.“Book lore ne'er served, when trial came, Nor gifts, when faith was dead.” — J. H. Newman.
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3.
While; whereas; although; -- used in the manner of a conjunction to introduce a dependent adverbial sentence or clause, having a causal, conditional, or adversative relation to the principal proposition; as, he chose to turn highwayman when he might have continued an honest man; he removed the tree when it was the best in the grounds.
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4.
Which time; then; -- used elliptically as a noun.“I was adopted heir by his consent; Since when, his oath is broke.” — Shak.“Come hither; mend my ruff: Here, when! thou art such a tedious lady!” — J. Webster.“When as sacred light began to dawn.” — Milton.“When that mine eye is famished for a look.” — Shak.
Phrases & compounds
When as —
at the time that; when.