Definition of instrumentalness in English:

instrumentalness

Pronunciation /ˌɪnstrʊˈmɛntlnəs/

noun

rare
  • The quality or condition of being instrumental; especially the fact or function of serving to bring about a result or accomplish a purpose.

    Since 20th century chiefly in the context of philosophical concepts of instrumentalism.

Origin

Mid 17th century; earliest use found in Daniel Rogers (1573–1652), Church of England clergyman. From instrumental + -ness.