onto
- to and upon; to a position on
- ☆ Slang aware of or familiar with, esp. aware of the real nature or meaning of: they're onto our schemes
See onto in American Heritage Dictionary 4
(ŏnˈto͞oˌ, -tə, ônˈ-)
preposition- On top of; to a position on; upon: The dog jumped onto the chair. See Usage Note at on.
- Informal Fully aware of; informed about: The police are onto the robbers' plans.
adjective Mathematics Of, relating to, or being a mapping such that every element of the target set referred to is the image of an element in the domain.
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