The Collaborative International Dictionary of English v.0.48:
Deity \De"i*ty\ (d[=e]"[i^]*t[y^]), n.; pl. Deities
(d[=e]"[i^]*t[i^]z). [OE. deite, F. d['e]it['e], fr. L.
deitas, fr. deus a god; akin to divus divine, Jupiter, gen.
Jovis, Jupiter, dies day, Gr. di^os divine, Zey`s, gen.
Dio`s, Zeus, Skr. d[=e]va divine, as a noun, god, daiva
divine, dy[=o] sky, day, hence, the sky personified as a god,
and to the first syllable of E. Tuesday, Gael. & Ir. dia God,
W. duw. Cf. Divine, Journey, Journal, Tuesday.]
1. The collection of attributes which make up the nature of a
god; divinity; godhead; as, the deity of the Supreme Being
is seen in his works.
They declared with emphasis the perfect deity and
the perfect manhood of Christ. --Milman.
2. A god or goddess; a heathen god.
To worship calves, the deities
Of Egypt. --Milton.
The Deity, God, the Supreme Being.
This great poet and philosopher [Simonides], the
more he contemplated the nature of the Deity, found
that he waded but the more out of his depth.