Antiparticle with no resistance outside current location (8)
I believe the answer is:
position
'current location' is the definition.
'position' can be an answer for 'location' (synonyms). I'm unsure of the 'current' bit.
'antiparticle with no resistance outside' is the wordplay.
'antiparticle with' becomes 'po' (I can't explain this - if you can you should give a lot more credence to this answer).
'no' becomes 'O' (resembles 0 - 'no' can mean 'zero').
'resistance' becomes 'sit-in' (sit-in is a kind of resistance).
'outside' is an insertion indicator (some letters go outside others).
'o' inserted into 'sitin' is 'sition'.
'po'+'sition'='POSITION'
Can you help me to learn more?
(Other definitions for position that I've seen before include "Job; point of view" , "Place where something is" , "Office - location" , "Location or attitude" , "case" .)