Definition of onto
- We climbed onto the roof.
- Turn left onto Fifth Avenue.
- put me onto your methods
- was onto something that should have been pursued further
- —Bosley Crowther
- a function mapping the set S onto the set T
We climbed onto the building's roof.
The book fell onto the floor.
The water spilled onto the floor.
The cowboy leaped onto his horse.
Transfer the data onto a disk.
Turn left onto Third Street at the traffic light.
: to a position that is on (something, such as a surface, area, or object)
: in a direction that allows you to get to or see (something)
—used to say that someone knows about what someone is doing or has done
What made you want to look up onto? Please tell us where you read or heard it (including the quote, if possible).