See under terpene (def 2).
(originally) any of a class of monocyclic hydrocarbons of the formula C 10 H 16 , obtained from plants.
this class or any of its oxygenated derivatives, any hydrocarbon from the same source having the formula C 5 H 8 (hemiterpene) the formula C 10 H 16 with an aliphatic structure (acyclic terpene) or two-ringed structure (bicyclic terpene) the formula C 15 H 24 (sesquiterpene) etc., and any of their oxygenated derivatives.
any one of a class of unsaturated hydrocarbons, such as the carotenes, that are found in the essential oils of many plants. Their molecules contain isoprene units and have the general formula (C5H8)n
Any of a class of hydrocarbons consisting of two or more isoprene (C5H8) units joined together. Simple terpenes are found in the essential oils and resins of plants such as conifers. Turpentine, for example, is such an oil. More complex terpenes include vitamin A, carotenoid pigments (such as lycopene), squalene, and rubber. Terpenes are used in organic synthesis.
having two auricles or earlike parts. adjective having two auricles or earlike parts
having two teeth or toothlike parts or processes. Historical Examples The Manual of the Botany of the Northern United States Asa Gray The Manual of the Botany of the Northern United States Asa Gray adjective having two teeth or toothlike parts or processes (chem) (of a ligand) having two atoms from which electrons can be […]
capable of reacting or functioning in two, usually opposite, directions. adjective (computing) (of a printhead) capable of printing from left to right and from right to left adj.
having two faces or fronts. Archaeology. having the opposite surfaces alike, as some tools. adjective having two faces or surfaces (botany) (of leaves, etc) having upper and lower surfaces differing from each other (archaeol) (of flints) flaked by percussion from two sides along the chopping edge bifacial (bī-fā’shəl) Flaked in such a way as to […]