S: (n) protein (any of a large group of nitrogenous organic compounds that are essential constituents of living cells; consist of polymers of amino acids; essential in the diet of animals for growth and for repair of tissues; can be obtained from meat and eggs and milk and legumes) "a diet high in protein"
S: (n) carbohydrate, saccharide, sugar (an essential structural component of living cells and source of energy for animals; includes simple sugars with small molecules as well as macromolecular substances; are classified according to the number of monosaccharide groups they contain)
S: (n) lipid, lipide, lipoid (an oily organic compound insoluble in water but soluble in organic solvents; essential structural component of living cells (along with proteins and carbohydrates))
S: (n) nucleic acid ((biochemistry) any of various macromolecules composed of nucleotide chains that are vital constituents of all living cells)
S: (n) compound, chemical compound ((chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight)
S: (n) material, stuff (the tangible substance that goes into the makeup of a physical object) "coal is a hard black material"; "wheat is the stuff they use to make bread"
S: (n) entity (that which is perceived or known or inferred to have its own distinct existence (living or nonliving))
S: (n) part, portion, component part, component, constituent (something determined in relation to something that includes it) "he wanted to feel a part of something bigger than himself"; "I read a portion of the manuscript"; "the smaller component is hard to reach"; "the animal constituent of plankton"
S: (n) relation (an abstraction belonging to or characteristic of two entities or parts together)
W: (adj) chemical [Related to: chemical] (of or made from or using substances produced by or used in reactions involving atomic or molecular changes) "chemical fertilizer"