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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

matter go
that which has mass and occupies space

substance go
a particular kind or species of matter with uniform properties

food, nutrient go
any substance that can be metabolized by an animal to give energy and build tissue

nourishment, alimentation, sustenance, nutrition, victuals, nutriment, aliment go
a source of materials to nourish the body

vitamin go
any of a group of organic substances essential in small quantities to normal metabolism

fat-soluble vitamin go
any vitamin that is soluble in fats

A, vitamin A, antiophthalmic factor, axerophthol go
any of several fat-soluble vitamins essential for normal vision

vitamin A1, retinol
an unsaturated alcohol that occurs in marine fish-liver oils and is synthesized biologically from carotene

noun.substance

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