Webster's Revised Unabridged Dictionary · 1913

Immaterial

Immaterial (im`mȧ*tē"ri*al) , adjective

[Prefix im- not + material: compare French immatériel.]

1.
Not consisting of matter; incorporeal; spiritual; disembodied.
Angels are spirits immaterial and intellectual. — Hooker
2.
Of no substantial consequence; without weight or significance; unimportant; as, it is wholly immaterial whether he does so or not.