Old captain joins Tiger Air abroad (9)

I believe the answer is:

geriatric

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

'captain joins tiger air abroad' is the wordplay.
'captain' becomes 'c' (this could be a standard abbreviation of which I'm unaware).
'joins' says to put letters next to each other.
'abroad' indicates anagramming the letters (abroad can mean moving around).
'tiger'+'air'='tigerair'
'tigerair' anagrammed gives 'geriatri'.
'c' put after 'geriatri' is 'GERIATRIC'.

Can you help me to learn more?

(Other definitions for geriatric that I've seen before include "Oldie" , "past it" , "treatment of the elderly" , "Relating to old people" .)

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

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