terpenoid

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ter·pene

 (tûr′pēn′)
n.
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.

terpenoid

(ˈtɜːpəˌnɔid) chem
n
(Chemistry) a class of chemical compounds including all terpenes
adj
(Chemistry) relating to terpenes
References in periodicals archive ?
Carotenoids are tetraterpenoid organic pigments which are widely distributed in living organisms such as algae (particularly Dunaliella salina), bacteria and higher plants [8].
All ethanol extracts showed the different intensity of brown colour ranging from deep brown to light brown indicating the presence of mono-terpenes and sesquiterpenes (essential oils), di-and triterpenoids (gums and resins), Tetraterpenoids (carotenoids, xanthophylls and carotenoic acids) and polyterpenoid is the rubber (Sameeno, 2007; and Raaman, 2006).
2]) consists of 40-carbon, hence known as tetraterpenoids, with alternating single and double carbon-carbon bonds with attached methyl side groups.