get onto somebody/something phrasal verb ( see also ↑ get )
1 . SPEAK/WRITE TO SOMEBODY informal to speak or write to someone:
I’ll get onto my lawyer about this.
2 . LEARN ABOUT SOMEBODY informal to find out about someone who has been doing something wrong:
How did the police get onto him?
3 . BE ELECTED to be elected as a member of a committee, a political organization etc:
She was quite keen to get onto the management committee.
4 . TALK ABOUT SOMETHING to begin to talk about a subject after you have been discussing something else:
After a few minutes they got onto the subject of the election.
5 . DO SOMETHING informal to start dealing with something:
Right, I’ll get onto it straight away.