Like some mysticism spread in tract (7)
I believe the answer is:
tantric
'like some mysticism' is the definition.
(relating to tantras, mystical texts)
'spread in tract' is the wordplay.
'spread' is an anagram indicator.
'in'+'tract'='intract'
'intract' anagrammed gives 'TANTRIC'.
(Other definitions for tantric that I've seen before include "Coming from religious writing" , "of meditating?" , "referring to some teachings" , "of religious writings" , "Relating to Hindu or Buddhist mystical texts" .)