| THANES | • thanes n. Plural of thane. • THANE n. a freeman granted land in return for military service; a Scottish feudal lord, also THEGN. | 
| ETHANES | • ethanes n. Plural of ethane. • ETHANE n. a gaseous hydrocarbon. | 
| ABTHANES | • abthanes n. Plural of abthane. • ABTHANE n. a monastic region of the old Irish church. | 
| METHANES | • methanes n. (Organic chemistry) Derivatives of methane. plural of methane. • METHANE n. a colourless odourless flammable gas, CH4, the simplest of the alkanes. | 
| URETHANES | • urethanes n. Plural of urethane. • URETHANE v. to coat with urethane. | 
| HALOTHANES | • halothanes n. Plural of halothane. • HALOTHANE n. an inhalation anaesthetic. | 
| DIAZOMETHANES | • diazomethanes n. Plural of diazomethane. • DIAZOMETHANE n. a yellow odourless explosive gas, used as a methylating agent. | 
| ETHOXYETHANES | • ethoxyethanes n. Plural of ethoxyethane. • ETHOXYETHANE n. a type of ether, aka diethyl ether, an isomer of butanol. | 
| NITROMETHANES | • nitromethanes n. Plural of nitromethane. • NITROMETHANE n. a liquid nitroparaffin used as an industrial solvent and as a fuel for rockets and high-performance engines. | 
| POLYURETHANES | • polyurethanes n. Plural of polyurethane. • POLYURETHANE n. any of various polymers used esp. in flexible and rigid foams, elastomers, and resins, also POLYURETHAN. | 
| CHLOROMETHANES | • chloromethanes n. Plural of chloromethane. • CHLOROMETHANE n. an organic compound, methyl chloride. | 
| SULFONMETHANES | • SULFONMETHANE n. (US) a colourless crystalline compound used medicinally as a hypnotic, also SULPHONMETHANE. | 
| DICHLOROETHANES | • dichloroethanes n. Plural of dichloroethane. • DICHLOROETHANE n. a colorless toxic liquid compound that is used chiefly as a solvent. | 
| SULPHONMETHANES | • SULPHONMETHANE n. a colourless crystalline compound used medicinally as a hypnotic, also SULFONMETHANE. | 
| TRIHALOMETHANES | • trihalomethanes n. Plural of trihalomethane. • TRIHALOMETHANE n. any of various derivatives of methane such as chloroform, that have three halogen atoms per molecule and are formed esp. during the chlorination of drinking water. | 
| TRIIODOMETHANES | • TRIIODOMETHANE n. another name for iodoform. |