See under butanol (def 2).
butanol that is made from fossil fuels (petrobutanol) or from certain plants or algae (biobutanol) and which is used as an alternative to gasoline.
a colourless substance existing in four isomeric forms. The three liquid isomers are used as solvents for resins, lacquers, etc, and in the manufacture of organic compounds. Formula: C4H9OH Also called butyl alcohol
(by’tə-nôl’, -nōl’, nŏl’)
Either of the two butyl alcohols that are derived from butane and have a straight chain of carbon atoms. Butanols are used as solvents and in organic synthesis. Chemical formula: C4H10O.
enzyme. noun a chemical, esp an enzyme, that initiates or increases the rate of a biochemical reaction
the science dealing with the chemistry of living matter. the chemistry of living matter. Contemporary Examples The Week in Death: Alexander Shulgrin, Who Synthesized the Drug Ecstasy The Telegraph June 6, 2014 Historical Examples Agricultural Implements and Machines in the Collection of the National Museum of History and Technology John T. Schlebecker Contamination Crew Alan […]
- Biochemical oxygen demand
the oxygen required by aerobic organisms, as those in sewage, for metabolism. Abbreviation: BOD. noun a measure of the organic pollution of water: the amount of oxygen, in mg per litre of water, absorbed by a sample kept at 20°C for five days BOD biochemical oxygen demand (bī’ō-kěm’ĭ-kəl) The amount of oxygen required by aerobic […]
of or relating to the effects of climate on living organisms. Historical Examples A Distributional Study of the Amphibians of the Isthmus of Tehuantepec, Mexico William E. Duellman