In theology, affirming the humanity or human nature of Christ, but denying his divinity.Having regard to the interests of humanity, or all mankind; broadly philanthropic.n. In theology: One who asserts the mere humanity of Jesus Christ, and denies his divinity; a Unitarian.n. One who maintains the perfectibility of human nature without the aid of grace.n. One who adopts the doctrine or theory that man's sphere of duty is limited to a benevolent interest in and practical promotion of the welfare of the human race, apart from all considerations of religion.n. A philanthropist.