Definition of object matter in English:

object matter

Pronunciation /ˈɒbdʒɪktˌmatə/ /ˈɒbdʒɛktˌmatə/

noun

  • The matter that is the object of an action or study; the matter dealt with or treated.

Origin

Mid 17th century; earliest use found in Στερέωμα. From object + matter, after subject matter.