now 
(nou)
(nou)adv.
1. At the present time: goods now on sale; the now aging dictator.
2. At once; immediately: Stop now.
3. In the immediate past; very recently: left the room just now.
4. At this point in the series of events; then: The ship was now listing to port.
5. At times; sometimes: now hot, now cold.
6. Nowadays.
7. In these circumstances; as things are: Now we won't be able to stay.
8.
a. Used to introduce a command, reproof, or request: Now pay attention.
b. Used to indicate a change of subject or to preface a remark: Now, let's get down to work.
conj.
Seeing that; since. Often used with that: Now that spring is here, we can expect milder weather.
n.
The present time or moment: wouldn't work up to now.
adj.
Idiom: 1. Of the present time; current: our now governor.
2. Slang Currently fashionable; trendy: the now sound of this new rock band.
now and again/then
Occasionally.
[Middle English, from Old English nū; see nu- in the Appendix of Indo-European roots.]
nowness n.