Crossword Genius

Monograph about representation of sounds with symbols (9)

Ross

I believe the answer is:

phonogram

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

'representation of sounds with symbols' is the definition.
I can't judge whether this defines the answer.

'monograph about' is the wordplay.
'about' indicates an anagram.
'monograph' anagrammed gives 'PHONOGRAM'.

Can you help me to learn more?

(Another definition for phonogram that I've seen is " Character representing a sound".)

I've seen this clue in The Hindu.
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