For the record, extra large business emblems (5)
I believe the answer is:
logos
'business emblems' is the definition.
The definition and answer can be both related to communication as well as being plural nouns.
Perhaps you can see an association between them that I don't see?
'for the record extra large' is the wordplay.
I cannot quite understand how this works, but
'record' could be 'log' (log is a kind of record) and 'log' is located in the answer.
'large' could be 'os' (abbreviation for oversize) and 'os' is found in the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for logos that I've seen before include "philosophical principle" , "The Word of God" .)