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) vanillin (a crystalline compound found in vanilla beans and some balsam resins; used in perfumes and flavorings)
S: (n) acceptor ((chemistry) in the formation of a coordinate bond it is the compound to which electrons are donated)
S: (n) adduct (a compound formed by an addition reaction)
S: (n) antiknock (any of various compounds that are added to gasoline to reduce engine knocking)
S: (n) acid (any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt)
S: (n) arsenide (a compound of arsenic with a more positive element)
S: (n) hydrogen cyanide (a highly poisonous gas or volatile liquid that smells like bitter almonds; becomes a gas at around 90 degree Fahrenheit and is most dangerous when inhaled; the anhydride of hydrocyanic acid; used in manufacturing)
S: (n) base, alkali (any of various water-soluble compounds capable of turning litmus blue and reacting with an acid to form a salt and water) "bases include oxides and hydroxides of metals and ammonia"
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) substance (the real physical matter of which a person or thing consists) "DNA is the substance of our genes"
S: (n) matter (that which has mass and occupies space) "physicists study both the nature of matter and the forces which govern it"
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)
S: (n) carbonyl (a compound containing metal combined with carbon monoxide)
S: (n) carbon disulfide (a toxic colorless flammable liquid (CS2); used in the manufacture of rayon and cellophane and carbon tetrachloride and as a solvent for rubber)
S: (n) cofactor (a substance (as a coenzyme) that must join with another to produce a given result)
S: (n) cementite, iron carbide (a chemical compound that is a constituent of steel and cast iron; very hard and brittle)
S: (n) chloropicrin, nitrochloroform (a heavy colorless insoluble liquid compound that causes tears and vomiting; used as a pesticide and as tear gas)
S: (n) allomorph (any of several different crystalline forms of the same chemical compound) "calcium carbonate occurs in the allomorphs calcite and aragonite"
S: (n) corrosive (a substance having the tendency to cause corrosion (such a strong acids or alkali))
S: (n) menthol (a crystalline compound that has the cool and minty taste and odor that occurs naturally in peppermint oil; used as a flavoring and in medicine to relieve itching, pain, and nasal congestion)
S: (n) nitrogen mustard (a toxic compound resembling mustard gas in structure; important in cancer treatment)
S: (n) nitride (a compound containing nitrogen and a more electropositive element (such as phosphorus or a metal))
S: (n) oxide (any compound of oxygen with another element or a radical)
S: (n) polymer (a naturally occurring or synthetic compound consisting of large molecules made up of a linked series of repeated simple monomers)
S: (n) preservative (a chemical compound that is added to protect against decay or decomposition)
S: (n) quinone, benzoquinone (any of a class of aromatic yellow compounds including several that are biologically important as coenzymes or acceptors or vitamins; used in making dyes)
S: (n) tetrachloride (any compound that contains four chlorine atoms per molecule)
S: (n) triazine (any of three isomeric compounds having three carbon and three nitrogen atoms in a six-membered ring)
S: (n) yellowcake, U308 (an impure mixture of uranium oxides obtained during the processing of uranium ore)
S: (n) enamel (a colored glassy compound (opaque or partially opaque) that is fused to the surface of metal or glass or pottery for decoration or protection)
S: (n) pregnanediol (a compound found in women's urine during certain phases of the menstrual cycle and in the urine of pregnant women)