Character from The Odyssey that’s acidic? (3)
I believe the answer is:
phi
'character' is the definition.
(phi is a kind of character)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for phi that I've seen before include "letter to Timon?" , "classic character" , "exotic character" , "Greek letter in previous answer" , "Twenty-first letter of the Greek alphabet" .)