Joggers in mass regularly visited Exmoor golf club (9)
I believe the answer is:
memoranda
'joggers' is the definition.
Although both the answer and definition are plural nouns, I cannot see how one could define the other.
'mass regularly visited exmoor golf club' is the wordplay.
'mass' becomes 'm' (symbol used in Physics e.g. f=ma).
'regularly visited' means one should take alternating letters (letters are taken at regular intervals).
'golf club' becomes 'randa' (I've seen this in other clues).
The alternating letters of 'exmoor' are 'emo'.
'm'+'emo'+'randa'='MEMORANDA'
'in' acts as a link.
Can you help me to learn more?
(Other definitions for memoranda that I've seen before include "Records" , "official minutes" , "Written messages or notes" , "Communications" , "Notes recorded for future use" .)