Meaning of the word "be resistant to" in English

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

be resistant to

US /bi rɪˈzɪstənt tu/
UK /bi rɪˈzɪstənt tuː/

Phrase

to not be affected by something; to oppose or fight against something

Example:
Some bacteria have become resistant to antibiotics.
The material is highly resistant to heat and corrosion.