thereupon Meaning, Definition & Usage

There`up*on" adverb
Definitions
  1. Upon that or this; thereon. "They shall feed thereupon." Zeph. ii. 7.
  2. On account, or in consequence, of that; therefore.
    [He] hopes to find you forward, . . . And thereupon he sends you this good news. Shak.
  3. Immediately; at once; without delay.

Webster 1913