Webster's Revised Unabridged Dictionary · 1913

Theism

Theism , noun

[From Greek {not transcribed} God; probably akin to {not transcribed} to pray for, {not transcribed} spoken by God, decreed: compare French théisme. Compare Enthusiasm, Pantheon, Theology.]

The belief or acknowledgment of the existence of a God, as opposed to atheism, pantheism, or polytheism.

Theism (thē"iz'm) , noun

[New Latin & English thea tea + -ism.]

(Medicine) The morbid condition resulting from the excessive use of tea.