Crossword Genius

A raptor and a parrot remarkably commensurate (3,4)

Ross

I believe the answer is:

pro rata

'commensurate' is the definition.
(something done pro rata is fair or commensurate)

I don't understand the rest of the clue.

(Other definitions for pro rata that I've seen before include "maintaining correspondence" , "Proportionally" , "In proportion (Latin)" , "Proportional, according to the rate" , "fairly divided" .)

I've seen this clue in The Guardian.
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.