[1] : The Collaborative International Dictionary of English v.0.48

when \when\, adv. oe. when, whan, whenne, whanne, as.
   hwaenne, hwanne, hwonne; akin to os. hwan, od. wan, ohg.
   wanne, g. wann when, wenn if, when, goth. hwan when, and to
   e. who. ????. see who.
   1913 webster
   1. at what time; -- used interrogatively.
      1913 webster

            when shall these things be?           --matt. xxiv.
                                                  3.
      1913 webster

   note: see the note under what, pron., 1.
         1913 webster

   2. at what time; at, during, or after the time that; at or
      just after, the moment that; -- used relatively.
      1913 webster

            kings may
            take their advantage when and how they list.
                                                  --daniel.
      1913 webster

            book lore ne'er served, when trial came,
            nor gifts, when faith was dead.       --j. h.
                                                  newman.
      1913 webster

   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.
      1913 webster

   4. which time; then; -- used elliptically as a noun.
      1913 webster

            i was adopted heir by his consent;
            since when, his oath is broke.        --shak.
      1913 webster

   note: when was formerly used as an exclamation of surprise or
         impatience, like what
         1913 webster

               come hither; mend my ruff:
               here, when thou art such a tedious lady --j.
                                                  webster.
         1913 webster

   when as, when that, at the time that; when. obs.
      1913 webster

            when as sacred light began to dawn.   --milton.
      1913 webster

            when that mine eye is famished for a look. --shak.
      1913 webster
see also:
who what when as when that 

According As >> A Words
According As, definition of term: According As
according+as_pag1.html

Aasu As >> A Words
Aasu As, definition of term: Aasu As
aasu+as_pag1.html