1The belief or theory that humanity is the central or most important element of existence or of the universe; anthropocentrism.
2In physics, philosophy, and cosmology: (support for) the principle or theory that the nature of the universe must be compatible with the existence of intelligent life, especially human life; advocacy or expression of (a version of) the anthropic principle.
3 rare The attribution of human form, feelings, language, etc., to something other than a human being; an instance of this; anthropomorphism, anthropopathy.
Early 18th century (in an earlier sense). From ancient Greek ἄνθρωπος + -ism.