Meaning of the word "assuming that" in English

What does "assuming that" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

assuming that

US /əˈsuːmɪŋ ðæt/
UK /əˈsjuːmɪŋ ðæt/

Conjunction

on the assumption that; if

Example:
Assuming that the weather is good, we'll go for a picnic.
You can borrow my car, assuming that you fill up the tank.