| equisetiform | <botany> Having the form of the equisetum. Origin: Equisetum. Source: Websters Dictionary (01 Mar 1998) |
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| equisetosis | A toxicosis in horses caused by eating horsetail (Equisetum arvense, a weed). (05 Mar 2000) |
| equisetum | Origin: L, the horsetail, fr. Equus horse + seta a thick, stiff hair, bristle. <botany> A genus of vascular, cryptogamic, herbaceous plants; also called horsetails. The Equiseta have hollow jointed stems and no true leaves. The cuticle often contains siliceous granules, so that one species (E. Hyemale) is used for scouring and polishing, under the name of Dutch rush or scouring rush. Source: Websters Dictionary (01 Mar 1998) |
| equitant | <botany> Of leaves, folded in half along the midline so that the adaxial surface disappears, and overlapping the edges of a similarly folded leaf on the opposite side of the stem. (09 Oct 1997) |
| equites | An order of knights holding a middle place between the senate and the commonalty; members of the Roman equestrian order. Origin: L, pl. Of eques a horseman. Source: Websters Dictionary (01 Mar 1998) |
| equitoxic | Of equivalent toxicity. (05 Mar 2000) |
| equivalence | <biochemistry, chemistry, immunology> The situation where two interacting species are present in concentrations just sufficient to produce occupation of all binding sites. Only used to describe high avidity interactions, especially the antibody/antigen interaction. (18 Nov 1997) |
| equivalence point | In a precipitin reaction, the zone in which neither antibody nor antigen is in excess. See: precipitation. Synonym: equivalence point. (05 Mar 2000) |
| equivalence zone | In a precipitin reaction, the zone in which neither antibody nor antigen is in excess. See: precipitation. Synonym: equivalence point. (05 Mar 2000) |
| equivalency | Same as Equivalence. Source: Websters Dictionary (01 Mar 1998) |
| equivalent | Having the same value, neutralising or counterbalancing. Origin: L. Aequivalens, from aequus = equal, valere = to be worth (11 Nov 1997) |
| equivalent dose | In radiation protection, the absorbed dose averaged over a tissue or organ and weighted for the quality of the radiation of interest. The unit of equivalent dose is the sievert. (05 Mar 2000) |
| equivalent extract | A fluidextract of the same strength, weight for weight, as the original drug. Synonym: valoid. (05 Mar 2000) |
| equivalent focal length | <microscopy> The focal length of the simple lens that has the same power as the compound lens. The stated focal lengths of microscope objectives are the equivalent focal length since their front and back focal lengths are very different. (05 Aug 1998) |
| equivalent form reliability | In psychology, the consistency of measurement based on the correlation between scores on two similar forms of the same test taken by the same individual. See: reliability coefficient. (05 Mar 2000) |
| equine |
(equine) (e
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| equine encephalomyelitis |
a type of encephalomyelitis in horses and mules, caused by an alphavirus and spread to humans by mosquitoes; it occurs in summer epizootics in the Western Hemisphere. Three forms are recognized: eastern equine e., western equine e., and Venezuelan equine e. Called also equine encephalitis. See also under virus.
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| equipotential |
(equi
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| equivalence |
(equiv
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| equivalent |
(equiv
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| EQ | having all sides or faces equal |
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| EQ | a three-sided regular polygon |
| EQ | bring to a chemical stasis or equilibrium |
| EQ | bring into balance or equilibrium |
| EQ | stabilization by bringing into equilibrium |
| EQ | bring into balance or equilibrium |
| EQ | a sensory system located in structures of the inner ear that registers the orientation of the head |
| EQ | a chemical reaction and its reverse proceed at equal rates |
| EQ | equality of distribution |
| EQ | a stable situation in which forces cancel one another |
| EQ | (chemistry) the ratio of concentrations when chemical equilibrium is reached in a reversible reaction (when the rate of the forward reaction equals the rate of the reverse reaction) |
| EQ | (chemistry) the principle that (at chemical equilibrium) in a reversible reaction the ratio of the rate of the forward reaction to the rate of the reverse reaction is a constant for that reaction |