when

  1. Adverb.  (interrogative) (non-gloss definition, Used to introduce questions about time) .
  2. Adverb.  (non-gloss definition, Used to introduce indirect questions about time) .
  3. Conjunction.  At what time.
  4. Conjunction.  At such time as.
  5. Conjunction.  As soon as.
  6. Conjunction.  At a time in the past,.
  7. Pronoun.  (context, interrogative) What time; which time.
  8. Noun.  The time.

This is an unmodified, but possibly outdated, definition from Wiktionary and used here under the Creative Commons license. Wiktionary is a great resource. If you like it too, please donate to Wikimedia.

This entry was last updated on RefTopia from its source on 3/20/2012.