Etymology: Middle English, from Old English nū; akin to Old High German nū now, Latin nunc, Greek nyn
Date: before 12th century
a. at the present time or moment
b. in the time immediately before the present <thought of them just now> c. in the time immediately to follow ; forthwith <come in now> 2. — used with the sense of present time weakened or lost to express command, request, or admonition <now hear this> <now you be sure to write> 3. — used with the sense of present time weakened or lost to introduce an important point or indicate a transition (as of ideas) <now, this may seem reasonable at first> 4. sometimes <now one and now another> 5. under the present circumstances 6. at the time referred to <now the trouble began> 7. by this time <has been teaching now for twenty years> II. conjunction Date: before 12th century in view of the fact that ; since — often followed by that <now that we are here> III. noun Date: 12th century the present time or moment <been ill up to now> IV. adjective Date: 14th century 1. of or relating to the present time ; existing <the now president> 2. a. excitingly new <now clothes> b. constantly aware of what is new <now people> <the now generation>
New Collegiate Dictionary. 2001.