4594  semeron  say'-mer-on

 neuter (as adverb) of a 
presumed compound of the 
article 3588  (t changed to 
s) and 2250; on the (i.e. 
this) day (or night current 
or just passed); generally, 
now (i.e. at present, 
hitherto):--this (to-)day.

 see GREEK for 3588

 see GREEK for 2250