The record of our growing old is depressing (12)

I believe the answer is:

discouraging

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

'is depressing' is the definition.
(I've seen this before)

'the record of our growing old' is the wordplay.
'the record of' becomes 'disc' (I can't justify this - if you can you should give a lot more credence to this answer).
'growing old' becomes 'aging' (I've seen this before).
'disc'+'our'+'aging'='DISCOURAGING'

Can you help me to learn more?

(Other definitions for discouraging that I've seen before include "Putting (someone) off" , "Depressing" .)

I've seen this clue in The Globe and Mail.

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.