资料来源 : Webster's Revised Unabridged Dictionary (1913)

Henceforward \Hence`for"ward\, adv.
   From this time forward; henceforth.

资料来源 : WordNet®

henceforward
     adv : from this time forth; from now on; "henceforth she will be
           known as Mrs. Smith" [syn: {henceforth}]