Definition of start on
- Did you start on your homework yet?
- The doctor started him on a treatment with antibiotics.
- When should we start the baby on solid food?
: to move suddenly and violently : spring
: to react with a sudden brief involuntary movement
: to issue with sudden force
: a sudden involuntary bodily movement or reaction
: a brief and sudden action or movement
: a sudden capricious impulse or outburst
What made you want to look up start on? Please tell us where you read or heard it (including the quote, if possible).