Record time - grammar question.

[CharlotteBog]

If I say "I completed the task in record time" what sort of word is record? An adjective?

Yes its an adjective in that context.

Thank you. Someone proof read a presentation I wrote and asked me to change
"Record time taken" to "Recorded time taken"

We absolutely didn't do anything in record time, but we did note down the time it took 😃It got me thinking about the grammar.

i don't understand.
if you didn't complete the task in record time, why say that you did?
or do you mean that you simply recorded how long it took you to complete the task.
sounds like a confusion of categories, rather than a matter of grammar, to me.

Wait, so you are referring to the time being noted down, not that you completed it quickly? In that case, your sentence makes no sense (and 'record' is being used as a verb).

I didn't mean to.
When I wrote "Record time taken" in my head I was thinking that we recorded the time taken. The person who proof read it, read it as "completed in a record time" and asked me to change it to "recorded time taken".

"Record time taken" is ambiguous, "recorded time taken" isn't.

I was just curious about the grammar.

Yes, that's why I changed it.

I think you need to read my second post to be clear about what I did.