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Parent Categories

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
the real physical matter of which a person or thing consists

material, stuff go
the tangible substance that goes into the makeup of a physical object

chemical, chemical substance go
material produced by or used in a reaction involving changes in atoms or molecules

compound, chemical compound go
(chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight

organic compound go
any compound of carbon and another element or a radical

amino acid, aminoalkanoic acid go
organic compounds containing an amino group and a carboxylic acid group

essential amino acid
an amino acid that is required by animals but that they cannot synthesize

noun.substance

10 Subcategories

arginine go
a bitter tasting amino acid found in proteins and necessary for nutrition
histidine go
an essential amino acid found in proteins that is important for the growth and repair of tissue
isoleucine go
an essential amino acid found in proteins
leucine go
a white crystalline amino acid occurring in proteins that is essential for nutrition
lysine go
an essential amino acid found in proteins
methionine go
a crystalline amino acid containing sulfur
phenylalanine go
an essential amino acid found in proteins and needed for growth of children and for protein metabolism in children and adults
threonine go
a colorless crystalline amino acid found in protein
tryptophan, tryptophane go
an amino acid that occurs in proteins
valine go
an essential amino acid found in proteins