Here you will find one or more explanations in English for the word ONSET.
Also in the bottom left of the page several parts of wikipedia pages related to the word ONSET and, of course, ONSET synonyms and on the right images related to the word ONSET.
Onset
Onset On"set`, v. t.
1. To assault; to set upon. [Obs.]
2. To set about; to begin. [Obs.] --Carew.
Onset
Onset On"set`, n. [On + set.]
1. A rushing or setting upon; an attack; an assault; a
storming; especially, the assault of an army. --Milton.
The onset and retire Of both your armies. --Shak.
Who on that day the word of onset gave.
--Wordsworth.
2. A setting about; a beginning. [Obs.] --Shak.
There is surely no greater wisdom than well to time
the beginnings and onsets of things. --Bacon.
3. Anything set on, or added, as an ornament or as a useful
appendage. [Obs.] --Johnson.
Meaning of ONSET from wikipedia