| isopyknic | <physics> Having equal density, as different regions of a medium. A line or surface passing through those points in a medium, at which the density is the same as, an isopycnic line or surface. Origin: Iso- + Gr. Pyknos dense. (08 Mar 2000) |
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| isopyridoxal dehydrogenase | <enzyme> Nad+ dependent; from arthrobacter cr-7 grown on pyridoxine; involved in vitamin b6 degradation Registry number: EC 1.1.1.- (26 Jun 1999) |
| isopyrocalciferol | <biochemistry> A thermal decomposition product of calciferol; a stereoisomer of pyrocalciferol and ergosterol. Chemical name: 9b-Ergosterol. (05 Mar 2000) |
| isoquinoline | A group of compounds with the heterocyclic ring structure of benzo(c)pyridine. The ring structure is characteristic of the group of opium alkaloids such as papaverine. 1. <chemistry> Benzo[c]pyridine; ring structure is characteristic of the group of opium alkaloids represented by papaverine. 2. A class of alkaloids containing the isoquinoline ring structure. (05 Mar 2000) |
| isoquinoline 1-oxidoreductase | <enzyme> A molybdenum-containing hydroxylase from pseudomonas diminuta; catalyses the hydroxylation of isoquinoline to 1-oxo-1,2-dihydroisoquinoline with concomitant reduction of a suitable electron acceptor; mw 95 kD Registry number: EC 1.14.99.- Synonym: isoquinoline 1-hydroxylase (26 Jun 1999) |
| isorcin | <chemistry> A crystalline hydrocarbon derivative, metameric with orcin, but produced artificially. Synonym: cresorcin. Origin: Iso- + orcin. Source: Websters Dictionary (01 Mar 1998) |
| isorhythmic dissociation | <cardiology, physiology> A-V dissociation characterised by equal or closely similar atrial and ventricular rates. (05 Mar 2000) |
| isoriboflavin | <chemical> A riboflavin antimetabolite, differing from riboflavin in that the methyl groups on the isoalloxazine nucleus are in the 6,7 positions rather than the 7,8. Chemical name: 8-Demethyl-6-methylriboflavin. (05 Mar 2000) |
| isorrhoea | Equality of intake and output of water; maintenance of water equilibrium. Origin: iso-+ G. Rhoia, a flow (05 Mar 2000) |
| isorropic | Of equal value. <geometry> Isorropic line (in a diagram), the locus of all the points for which a specified function has a constant value. Origin: Gr. 'isorropos in equipoise; 'isos equal + "roph downward inclination or momentum. Source: Websters Dictionary (01 Mar 1998) |
| isosbestic | <chemistry> Wavelength at which the absorption coefficients of equimolar solutions of two different substances are identical. (18 Nov 1997) |
| isosbestic point | <physics> In applied spectroscopy, a wavelength at which absorbance of two substances, one of which can be converted into the other, is the same. (05 Mar 2000) |
| isosceles | <geometry> Having two legs or sides that are equal; said of a triangle. Origin: L, fr. Gr.; 'isos equal + leg. Source: Websters Dictionary (01 Mar 1998) |
| isoschisomer | <molecular biology> One of several restriction endonucleases which are isolated from different sources but which break a DNA molecule at the same recognition site. (09 Oct 1997) |
| isoschizomer | <molecular biology> A pair of restriction enzymes specific for the same recognition sequence. (14 Nov 1997) |
| isolation |
1. The process of getting an organism in pure culture. 2. The pure culture itself. (17)
Ãâó: ppathw3.cals.cornell.edu/glossary/Defs_I.htm
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| isochronous |
Time-dependent. Pronounced eye-sock-ra-nuss, it refers to processes where data must be delivered within certain time constraints. For example, multimedia streams require an isochronous transport mechanism to ensure that data is delivered as fast as it is displayed and to ensure that the audio is synchronized with the video.
Ãâó: www.angelfire.com/anime3/internet/communications.h...
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| isotropy |
The condition in which the hydraulic or other properties of an aquifer are the same in all directions.
Ãâó: www.epa.gov/OCEPAterms/iterms.html
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| isolation |
Separation of an ill person who has a communicable disease (eg, SARSpatient) from those who are healthy. Isolation prevents transmission of infection to others and also allows for the focused delivery of specialized health care to ill persons.
Ãâó: www.cdc.gov/ncidod/sars/guidance/core/app2.htm
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| isolate |
a specific individual microbe and its genetically identical progeny.
Ãâó: www.aegis.com/pubs/beta/1999/be990414.html
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