from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Disbelief in or denial of the existence of God or gods.
- n. The doctrine that there is no God or gods.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Belief that no deities exist (sometimes including rejection of other religious beliefs).
- n. Rejection of belief that any deities exist (with or without a belief that no deities exist).
- n. Absence of belief that any deities exist (including absence of the concept of deities).
- n. Absence of belief in a particular deity, pantheon, or religious doctrine (notwithstanding belief in other deities).
from the GNU version of the Collaborative International Dictionary of English
- n. The disbelief or denial of the existence of a God, or supreme intelligent Being.
- n. Godlessness.
from The Century Dictionary and Cyclopedia
- n. The doctrine that there is no God; denial of the existence of God.
- n. The denial of theism, that is, of the doctrine that the great first cause is a supreme, intelligent, righteous person.
- n. A practical indifference to and disregard of God; godlessness.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the doctrine or belief that there is no God
- n. a lack of belief in the existence of God or gods
French athéisme, from athée, atheist, from Greek atheos, godless : a-, without; see a-1 + theos, god; see dhēs- in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)
16th century French athéisme, from athée ("atheist"), a loan from Ancient Greek ἄθεος (átheos, "godless"), from ἀ- (a-, "without") + θεός (theos, "deity, god"). First English attestation dates to 1587 (OED). (Wiktionary)