| octan | Applied to fever, the paroxysms of which recur every eighth day, the day of a paroxysm being counted as the first in the computation. Origin: L. Octo, eight (05 Mar 2000) |
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| octandioic acid | HOOC-(CH2)6-COOH;used in plastics and in the cross-linking of biopolymers; found in the urine as a product of ω-oxidation of fatty acids. Synonym: octandioic acid. Origin: L. Suber, cork oak, + -ic (05 Mar 2000) |
| octandria | <botany> A Linnaean class of plants, in which the flowers have eight stamens not united to one another or to the pistil. Origin: NL, fr. Gr. (for eight) +, male, man. Source: Websters Dictionary (01 Mar 1998) |
| octandrous | <botany> Of or pertaining to the Octandria; having eight distinct stamens. Source: Websters Dictionary (01 Mar 1998) |
| octane | See: Octa-] . <chemistry> Any one of a group of metametric hydrocarcons (C8H18) of the methane series. The most important is a colourless, volatile, inflammable liquid, found in petroleum, and a constituent of benzene or ligroin. Source: Websters Dictionary (01 Mar 1998) |
| octanes | Eight-carbon saturated hydrocarbon group of the methane series. Include isomers and derivatives. (12 Dec 1998) |
| octanoate | A salt or ester of caprylic acid. Synonym: octanoate. (05 Mar 2000) |
| octanoic acid | CH3(CH2)6COOH;a fatty acid found among the hydrolysis products of fat in butter, coconut oil, and other substances. Synonym: octanoic acid. (05 Mar 2000) |
| octanols | Isomeric forms and derivatives of octanol (c8h17oh). (12 Dec 1998) |
| octanoyl-CoA synthetase | Fatty acid thiokinase (medium chain), a ligase forming acyl-CoA's from medium-chain fatty acids and CoA with the conversion of ATP to AMP and PPi. A key step in activation of fatty acids. Synonym: acyl-activating enzyme, butyryl-CoA synthetase, octanoyl-CoA synthetase. (05 Mar 2000) |
| octant | 1. <geometry> The eighth part of a circle; an arc of 45 degrees. 2. <astronomy> The position or aspect of a heavenly body, as the moon or a planet, when half way between conjunction, or opposition, and quadrature, or distant from another body 45 degrees. 3. An instrument for measuring angles (generally called a quadrant), having an arc which measures up to 9O deg, but being itself the eighth part of a circle. Cf. Sextant. 4. <mathematics> One of the eight parts into which a space is divided by three coordinate planes. Origin: L. Octans, -antis. Fr. Octo eight. See Octave. Source: Websters Dictionary (01 Mar 1998) |
| octapeptide | A peptide made up of eight amino acid residues. (05 Mar 2000) |
| octaploidy | See: polyploidy. (05 Mar 2000) |
| octaprenyl pyrophosphate synthetase | <enzyme> E. Coli enzyme catalyses the condensation of isopentenyl pyrophosphate with farnesyl pyrophosphate to yield octaprenyl pyrophosphate Registry number: EC 2.5.1.- Synonym: octaprenyl diphosphate synthase (26 Jun 1999) |
| octapressin | <chemical> Synthetic analog of lypressin with more vasoconstrictor than antidiuretic action. It is used as a haemostatic. Pharmacological action: haemostatics, renal agents, vasoconstrictor agents. Chemical name: Vasopressin, 2-L-phenylalanine-8-L-lysine- (12 Dec 1998) |
Synonyms :
Synonyms : Acids, Octanoic
Synonyms : Heptylcarbinols, Hydroxyoctanes, Octylic Alcohols, Alcohols, Octylic, Octyl Alcohols
Synonyms : Octodon degus
Synonyms : 4-Octopamine, Norsympatol, alpha-(Aminoethyl)-4-hydroxybenzenemethanol
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| octet |
eight: the cardinal number that is the sum of seven and one eight performers or singers who perform together a set of eight similar things considered as a unit a musical composition written for eight performers
Ãâó: wordnet.princeton.edu/perl/webwn
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| octopus |
tentacles of octopus prepared as food bottom-living cephalopod having a soft oval body with eight long tentacles
Ãâó: wordnet.princeton.edu/perl/webwn
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| oct- |
October: the month following September and preceding November
Ãâó: wordnet.princeton.edu/perl/webwn
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| octet |
An eight-person, sixteen-oared scull. Very rare.
Ãâó: www.geocities.com/paxber/Rowing_glossary.htm
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| octreotide |
A drug similar to the naturally occurring growth hormone inhibitor somatostatin. Octreotide is used to treat diarrhea and flushing associated with certain types of tumors.
Ãâó: www.stjude.org/glossary
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| OCT | any isomeric saturated hydrocarbon found in petroleum and used as a fuel and solvent |
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| OCT | a measure of the antiknock properties of gasoline |
| OCT | a measure of the antiknock properties of gasoline |
| OCT | a dicarboxylic acid found in cork |
| OCT | of or relating to or shaped like an octagon |
| OCT | the constellation that includes the southern celestial pole |
| OCT | a measuring instrument for measuring angles to a celestial body |
| OCT | a rhythmic group of eight lines of verse |
| OCT | a musical interval of eight tones |
| OCT | a feast day and the seven days following it |
| OCT | Roman statesman who became emperor of Rome after defeating Mark Antony at Actium (63 BC - AD 14) |
| OCT | the size of a book whose pages are made by folding a sheet of paper three times to form eight leaves |
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