monism

The view in metaphysics that reality is a unified whole and that all existing things can be ascribed to or described by a single concept or system.

The doctrine that mind and matter are formed from, or reducible to, the same ultimate substance or principle of being.

Any system of thought which seeks to deduce all the varied phenomena of both the physical and spiritual worlds from a single principle; specifically, the metaphysical doctrine that there is but one substance, either mind (idealism) or matter (materialism), or a substance that is neither mind nor matter, but is the substantial ground of both: opposed to dualism.

Any theory or system which attempts to explain many heterogeneous phenomena by a single principle.

In biology, same as monogenesis .

That doctrine which refers all phenomena to a single ultimate constituent or agent; — the opposite of dualism.

See Monogenesis, 1.

The doctrine that the universe is an organized unitary being or total self-inclusive structure.

The doctrine of the oneness and unity of reality, despite the appearance of diversity in the world.

the doctrine that reality consists of a single basic substance or element