| octose | A sugar containing eight carbon atoms. (05 Mar 2000) |
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| octospermous | <botany> Containing eight seeds. Origin: Octo- + Cr. Seed. Source: Websters Dictionary (01 Mar 1998) |
| octostichous | <botany> In eight vertical ranks, as leaves on a stem. Origin: Octo- + Gr. A row. Source: Websters Dictionary (01 Mar 1998) |
| octoxynol | <chemical> Alpha-(octylphenyl)-omega-hydroxypoly(oxy-1,2-ethanediyl). Nonionic surfactant mixtures varying in the number of repeating ethoxy (oxy-1,2-ethanediyl) groups. They are used as detergents, emulsifiers, wetting agents, defoaming agents, etc. Octoxynol-9, the compound with 9 repeating ethoxy groups, is a spermatocide. Pharmacological action: antifoaming agents, detergents, excipient, spermatocidal agents, surface-active agent. Chemical name: Poly(oxy-1,2-ethanediyl), alpha-(4-(1,1,3,3-tetramethylbutyl)phenyl)-omega-hydroxy- (12 Dec 1998) |
| octoyl | <chemistry> A hypothetical radical (C8H15O), regarded as the essential residue of octoic acid. Origin: Octoic + -yl. Source: Websters Dictionary (01 Mar 1998) |
| octreotide | <chemical> D-phenylalanyl-l-cysteinyl-l-phenylalanyl-d-tryptophyl-l-lysyl-l-threonyl-n-(2-hydroxy-1-(hydroxymethyl)propyl)-l-cysteinamide cyclic (2-7)-disulfide. A potent, long-acting somatostatin octapeptide analog which has a wide range of physiological actions. It inhibits growth hormone secretion, is effective in the treatment of hormone-secreting tumours from various organs, and has beneficial effects in the management of many pathological states including diabetes mellitus, orthostatic hypertension, hyperinsulinism, hypergastrinaemia, and small bowel fistula. Pharmacological action: antineoplastic agent, hormonal, gastrointestinal agents, hormones, synthetic. Chemical name: L-Cysteinamide, D-phenylalanyl-L-cysteinyl-L-phenylalanyl-D-tryptophyl-L-lysyl-L-threonyl-N-(2-hydroxy-1-(hydroxymethyl)propyl)-, cyclic (2-7)-disulfide, (R-(R*,R*))- (12 Dec 1998) |
| octulose | An eight-carbon monoketose. (05 Mar 2000) |
| octulose 1,8-bisphosphate-heptulose 7-phosphotransferase | <enzyme> Catalyses phosphate transfer at c-1 between octulose 1,8-bisphosphate and sedoheptulose-7-phosphate; found in mammalian tissues with pentosephosphate pathway activity Registry number: EC 2.7.1.- Synonym: octop-sehp phosphotransferase, d-glycero d-ido octulose 1,8-bisphosphate-d-altro-heptulose 7-phosphotransferase (26 Jun 1999) |
| octulosonic acid | The -onic acid formally formed by oxidation of carbon atom 1 of octulose to a carboxylic acid group; a condensation product of d-arabinose and phosphoenolpyruvate analogous to neuraminic acid. It forms part of the repeating unit of the polysaccharides of the complex lipopolysaccharides of the Enterobacteriaceae constituting the characteristic somatic octose antigens. (05 Mar 2000) |
| octyl | <chemistry> A hypothetical hydrocarbon radical regarded as an essential residue of octane, and as entering into its derivatives; as, octyl alcohol. Origin: Octane + -yl. Source: Websters Dictionary (01 Mar 1998) |
| octyl gallate | Octyl 3,4,5-trihydroxybenzoate;an antioxidant. (05 Mar 2000) |
| octyl glucoside | <chemical> A biological detergent characterised by its ease of removal from hydrophobic proteins. Used to solubilise membrane proteins. (18 Nov 1997) |
| octylene | <chemistry> Any one of a series of metameric hydrocarbons (C8H16) of the ethylene series. In general they are combustible, colourless liquids. Origin: Octane + ethylene. Source: Websters Dictionary (01 Mar 1998) |
| octylic | <chemistry> Pertaining to, derived from, or containing, octyl; as, octylic ether. Source: Websters Dictionary (01 Mar 1998) |
| octylphenoxy polyethoxyethanol | Mono-p-isooctyl phenyl ether of polyethylene glycol; a surface-active (wetting) agent. (05 Mar 2000) |
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| octet rule |
All atoms want to be like the nearest noble gas. (Well, they all want to have the same number of valence electrons, anyway). To do this, they either gain or lose electrons (to form ionic compounds) or share electrons (to form covalent compounds).
Ãâó: misterguch.brinkster.net/vocabulary.html
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| octyl methoxycinnamate |
a sunscreen ingredient that can irritate the skin when worn for an extended period of time.
Ãâó: www.magnoliaspa.com/beauty-secrets/beauty_terms/be...
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| octet |
rule A scientific law stating that all atoms, except those of hydrogen and helium, require eight electrons in the outermost energy level to maintain chemical stability.
Ãâó: college.hmco.com/geology/resources/geologylink/glo...
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| octet |
A grouping of 8 bits; similar, but not identical to, a byte.
Ãâó: www.e-ratecentral.com/resources/help/glossary/o.as...
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| octet rule |
Atoms seek an arrangement that will surround them with eight electrons in the outermost energy level.
Ãâó: www.hillsdale.edu/AcademicAssociations/Chemistry/s...
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| OCT | a verse line having eight syllables or a poem of octosyllabic lines |
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| OCT | a tax on various goods brought into a town |
| OCT | having eight units or components |
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