onto

onto /ˈɑːntʊ/ preposition
onto
/ˈɑːntʊ/
preposition
Britannica Dictionary definition of ONTO
1 
: to a position that is on (something, such as a surface, area, or object)
— often used figuratively
2 
: in a direction that allows you to get to or see (something)
3 
a  — used to say that someone knows about what someone is doing or has done
b  — used to say that someone is becoming aware of or is finding something
4 
chiefly British : in the process of talking to (someone) usually to tell or ask something