Monism (noun)

A philosophical belief that there is only one ultimate reality or substance that underlies everything that exists.

Origin:

Derived from greek "monos" meaning "single" and "ism" meaning "a system of belief".

Examples:

1. Monism is the belief that there is only one ultimate reality.
2. Monism is the belief that everything is made of one substance.
3. Monism is a metaphysical belief that there is only one reality.
4. Monism is a belief system that is opposed to dualism.
5. Monism is the belief that mind and body are one entity.