Is this a little linear? Curvilinear (3)

I believe the answer is:

arc

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

'is this' is the definition.
The definition suggests a singular noun which matches the answer.

'a little linear? curvilinear' is the wordplay.
'a little' indicates a hidden word.
'ARC' is hidden in the letters of 'linear curvilinear'.

Can you help me to learn more?

(Other definitions for arc that I've seen before include "Part of curved line" , "Bow" , "Bend" , "Semi-circle" , "Curved part of circle" .)

I've seen this clue in The Telegraph.

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.