Crossword Genius

Was in charge of waves or particles (7)

Ross

I believe the answer is:

oversaw

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

'was in charge' is the definition.
I can't tell whether this defines the answer.

'waves or particles' is the wordplay.
'particles' indicates an anagram (the same parts or particles in a new order).
'waves'+'or'='wavesor'
'wavesor' anagrammed gives 'OVERSAW'.

'of' is the link.

Can you help me to learn more?

(Other definitions for oversaw that I've seen before include "Managed" , "What supervisor did" , "Supervised" , "watcher" .)

I've seen this clue in the Sydney Morning Herald.
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