01 a. Assuming or positing the actual existence or reality of the physical or external world.
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1.
Assuming or positing the actual existence or reality of the physical or external world.(Metaph.)“The cosmothetic idealists . . . deny that mind is immediately conscious of matter.” — Sir W. Hamilton.
Phrases & compounds
Cosmothetic idealists —
those who assume, without attempting to prove, the reality of external objects as corresponding to, and being the ground of, the ideas of which only the mind has direct cognizance.