S: (n) aldehyde (any of a class of highly reactive chemical compounds; used in making resins and dyes and organic acids)
S: (n) aliphatic compound (organic compound that is an alkane or alkene or alkyne or their derivative)
S: (n) alkylbenzene (organic compound that has an alkyl group bound to a benzene ring)
S: (n) alkyl halide, haloalkane (organic compound in which halogen atoms have been substituted for hydrogen atoms in an alkane)
S: (n) amino acid, aminoalkanoic acid (organic compounds containing an amino group and a carboxylic acid group) "proteins are composed of various proportions of about 20 common amino acids"
S: (n) diamine (any organic compound containing two amino groups)
S: (n) enol (an organic compound that contains a hydroxyl group bonded to a carbon atom which in turn is doubly bonded to another carbon atom)
S: (n) halon (a compound in which the hydrogen atoms of a hydrocarbon have been replaced by bromine and other halogen atoms; very stable; used in fire extinguishers although it is thought to release bromine that depletes the ozone layer)
S: (n) peptone (any of various water-soluble compounds that form by hydrolysis in the digestion of proteins to amino acids)
S: (n) quaternary ammonium compound (a compound derived from ammonium with hydrogen atoms replaced by organic groups; used as surface-active agents, disinfectants, and in drugs)
S: (n) proenzyme, zymogen (any of a group of compounds that are inactive precursors of enzymes and require some change (such as the hydrolysis of a fragment that masks an active enzyme) to become active)
S: (n) propylthiouracil (a crystalline compound used as an antithyroid drug in the treatment of goiter)
S: (n) ether (any of a class of organic compounds that have two hydrocarbon groups linked by an oxygen atom)
S: (n) acetal (any organic compound formed by adding alcohol molecules to aldehyde molecules)
S: (n) aldol, aldehyde-alcohol (an oily colorless liquid obtained by the condensation of two molecules of acetaldehyde; contains an alcohol group (-OH) and an aldehyde group (-CHO))
S: (n) alkaloid (natural bases containing nitrogen found in plants)
S: (n) amide (any organic compound containing the group -CONH2)
S: (n) rennet (a substance that curdles milk in making cheese and junket)
S: (n) thiazine (a compound made up of a ring of four carbon atoms and one sulfur atom and one nitrogen atom)
S: (n) cacodyl, tetramethyldiarsine (a poisonous oily liquid with a garlicky odor composed of 2 cacodyl groups; undergoes spontaneous combustion in dry air)
S: (n) glycoside (a group of compounds derived from monosaccharides)
S: (n) resin, rosin (any of a class of solid or semisolid viscous substances obtained either as exudations from certain plants or prepared by polymerization of simple molecules)
S: (n) halocarbon (one of various compounds of carbon and any of the halogens)
S: (n) hemiacetal (an organic compound usually formed as an intermediate product in the preparation of acetals from aldehydes or ketones)
S: (n) phenol (any of a class of weakly acidic organic compounds; molecule contains one or more hydroxyl groups)
S: (n) pyrimidine (a heterocyclic organic compound with a penetrating odor)
S: (n) quassia (a bitter compound used as an insecticide and tonic and vermifuge; extracted from the wood and bark of trees of the genera Quassia and Picrasma)
S: (n) steroid (any of several fat-soluble organic compounds having as a basis 17 carbon atoms in four rings; many have important physiological effects)
S: (n) urea, carbamide (the chief solid component of mammalian urine; synthesized from ammonia and carbon dioxide and used as fertilizer and in animal feed and in plastics)
S: (n) imide (any of a class of organic compounds that contain the divalent radical -CONHCO-)
S: (n) xanthine (crystalline oxidation product of the metabolism of nucleoproteins; precursor of uric acid; found in many organs and in urine)
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) sorbate (a material that has been or is capable of being taken up by another substance by either absorption or adsorption)
S: (n) sorbent, sorbent material (a material that sorbs another substance; i.e. that has the capacity or tendency to take it up by either absorption or adsorption)
S: (n) mineral (solid homogeneous inorganic substances occurring in nature having a definite chemical composition)
S: (n) rock, stone (material consisting of the aggregate of minerals like those making up the Earth's crust) "that mountain is solid rock"; "stone is abundant in New England and there are many quarries"
S: (n) particulate, particulate matter (a small discrete mass of solid or liquid matter that remains individually dispersed in gas or liquid emissions (usually considered to be an atmospheric pollutant))
S: (n) dust (free microscopic particles of solid material) "astronomers say that the empty space between planets actually contains measurable amounts of dust"
S: (n) elastomer (any of various elastic materials that resemble rubber (resumes its original shape when a deforming force is removed))
S: (n) earth, ground (the loose soft material that makes up a large part of the land surface) "they dug into the earth outside the church"
S: (n) detritus (loose material (stone fragments and silt etc) that is worn away from rocks)
S: (n) waste, waste material, waste matter, waste product (any materials unused and rejected as worthless or unwanted) "they collect the waste once a week"; "much of the waste material is carried off in the sewers"
S: (n) fiber, fibre (a slender and greatly elongated substance capable of being spun into yarn)
S: (n) filling, fill (any material that fills a space or container) "there was not enough fill for the trench"
S: (n) foam (a lightweight material in cellular form; made by introducing gas bubbles during manufacture)
S: (n) homogenate (material that has been homogenized (especially tissue that has been ground and mixed)) "liver homogenate"
S: (n) humate (material that is high in humic acids)
S: (n) impregnation (material with which something is impregnated) "the impregnation, whatever it was, had turned the rock blue"
S: (n) paper (a material made of cellulose pulp derived mainly from wood or rags or certain grasses)
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)