Saw film regularly to experience immersion (4)
I believe the answer is:
swim
'experience immersion' is the definition.
The answer and definition can be both acts as well as being singular nouns.
Maybe there's a link between them I don't understand?
'saw film regularly' is the wordplay.
'regularly' means one should take alternating letters (regularly take one letter, leave next etc.).
'saw'+'film'='sawfilm'
The alternate letters of 'sawfilm' are 'SWIM'.
'to' is the link.
Can you help me to learn more?
(Other definitions for swim that I've seen before include "Travel through water" , "Crawl, e.g." , "Go for a dip" , "Do the butterfly, perhaps?" , "Ooze out; show lots of (confidence)" .)