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entity go
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)

physical entity go
an entity that has physical existence

process, physical process go
a sustained phenomenon or one marked by gradual changes through a series of states

phenomenon go
any state or process known through the senses rather than by intuition or reasoning

natural phenomenon go
all phenomena that are not artificial

chemical phenomenon go
any natural phenomenon involving chemistry (as changes to atoms or molecules)

state, state of matter go
(chemistry) the three traditional states of matter are solids (fixed shape and volume) and liquids (fixed volume and shaped by the container) and gases (filling the container)

form, phase go
(physical chemistry) a distinct state of matter in a system

dispersing phase, dispersion medium, dispersing medium
(of colloids) a substance in which another is colloidally dispersed

noun.substance

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