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Any of various unsaturated hydrocarbons, C10H16, found in essential oils and oleoresins of plants such as conifers and used in organic syntheses.

[Obsolete terp(entine), variant of turpentine + -ene.]

ter·pe′nic adj.
ter′pe·noid′ adj. & n.


(ˈtɜːpəˌnɔid) chem
(Chemistry) a class of chemical compounds including all terpenes
(Chemistry) relating to terpenes
References in periodicals archive ?
Baccharis trinervis gave essential oils which were predominantly terpenoid in nature with a few aliphatic and aromatic compounds as minor and trace constituents.
ABSTRACT: Terpenoid contents of traditionally used ethnobotanically important plants (n=25) were determined.
This is not always the case, however, as 1,8-cineole, a terpenoid, was demonstrated to cause depolarization of the resting membrane and to block excitability, mainly indirectly, via the effect of depolarization voltage-dependent [Na.
Its toxicity is attributed to the presence of a hepatotoxic terpenoid known as atractyloside, a powerful inhibitor of cellular respiration and ATP synthesis.
Groups of related flavoring agents are considered together, among them alicyclic ketones, secondary alcohols, and related esters; aliphatic acyclic and alicyclic terpenoid tertiary alcohols and structurally related substances; benzul derivatives; and phenol and phenol derivatives.
As shown in Table 2, hexane extract which contains only terpenoid compounds has antibacterial activity against all tested bacteria but smallest compared to other extracts.
1996) Glyceraldehyde 3-phosphate and pyruvate as precursors of isoprenic units in an alternative non-mevalonate pathway for terpenoid biosynthesis.
1990) found a negative correlation between consumption and concentration of the terpenoid pinifolic acid in Scots pine (Pinus sylvestris); a similar observation was made by Sunnerheim-Sjoberg (1992) with a different monoterpene [(-)-angelicoidenol-2-0-[beta]-D-glucopyranoside] in Scots pine.
1]) is the size-resolved mass distribution yield of SOA formed by gas-phase reactions between ozone and the terpenoid, which is the ratio of the change in mass of SOA formed to the change in mass of terpenoid consumed; [GAMMA](-) is a conversion factor to change units of ppb/h to [mu]g/[m.
Hoslundia opposita, Lantana camara and Cymbopogon Plant Alkaloid Tannin Saponin Steroid Hoslundia opposita + + - - Lantana camara + + + - Cymbopogon Citrates - + - + Plant Phlobatanin Terpenoid Flavonoid Cardiac glycoside Hoslundia opposita - - + + Lantana camara - - + - Cymbopogon Citrates - - - - Table 5: Quantitative phytochemical analysis of plant extract.