[1] : The Collaborative International Dictionary of English v.0.48

theism \the"ism\, n. from gr. ? god; probably akin to ? to pray
   for, ? spoken by god, decreed: cf. f. th'eisme. cf.
   enthusiasm, pantheon, theology.
   the belief or acknowledgment of the existence of a god, as
   opposed to atheism, pantheism, or polytheism.
   1913 webster
see also:
enthusiasm pantheon theology atheism pantheism polytheism 

[2] : The Collaborative International Dictionary of English v.0.48

theism \the"ism\ th=e"i^z'm, n. nl.  e. thea tea +
   -ism. med.
   the morbid condition resulting from the excessive use of tea.
   webster 1913 suppl.

[3] : WordNet (r) 2.0

theism
     n : the doctrine or belief in the existence of a god or gods
         ant: atheism
see also:
atheism 

[4] : Moby Thesaurus II by Grady Ward, 1.0

49 moby thesaurus words for "theism":
   acosmism, adoration, allotheism, anthropolatry, anthropomorphism,
   anthropotheism, autotheism, churchgoing, conformity, cosmotheism,
   cultism, deism, devotedness, devotion, devoutness, ditheism,
   dualism, dutifulness, dyotheism, faith, faithfulness, henotheism,
   hylotheism, love of god, monolatry, monotheism, multitheism,
   myriotheism, observance, pantheism, physicomorphism, physitheism,
   pietism, piety, piousness, polytheism, psychotheism, religion,
   religionism, religiousness, reverence, tetratheism, theopantism,
   theriotheism, tritheism, veneration, worship, worshipfulness,
   zootheism

Theism >> T Words
Theism, definition of term: Theism
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