Granny - terribly remote, or just a bit? (9)
I believe the answer is:
nanometre
'a bit?' is the definition.
The answer and definition can be both quantities as well as being singular nouns.
Maybe there's an association between them I don't understand?
'granny terribly remote' is the wordplay.
'granny' becomes 'nan' ().
'terribly' is an anagram indicator.
'remote' anagrammed gives 'ometre'.
'nan'+'ometre'='NANOMETRE'
'or just' is the link.
Can you help me to learn more?
(Other definitions for nanometre that I've seen before include "Very, very short length" , "tiny distance" , "small unit" , "short distance" , "Some tiny measure" .)