FIZIKAI MOLEKULAVI, yak sohai fizikaro nomand, ki khosiyathoi fizikii jismhoro dar holathoi gunoguii agregati zimni tadqiqi sokhti mikroskopi (molekulavi)-i onho meomukht.
Minbad dar natijai inkishofi vusatnok ba sohahoi judogonayu mustaqil (fizikai jismhon sakht, fizikai molekulavii moe, fizikaii gazho va gayra) taqsim shuda, khud az bayn raft.