Crossword Genius

It's basic in maths (4)

Ross

I believe the answer is:

root

I'm a little stuck... Click here to teach me more about this clue!

'it's basic' is the definition.
(similar in meaning)

I don't understand the rest of the clue.

Can you help me to learn more?

(Other definitions for root that I've seen before include "Basic cause or origin" , "grub" , "Underground growth" , "Lowest part of plant" , "Derivation" .)

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.