| enamelogenesis imperfecta | An autosomal dominant or x-linked disorder in which there is faulty development of the dental enamel owing to agenesis, hypoplasia, or hypocalcification of the enamel. It is marked by enamel that is very thin and friable and frequently stained in various shades of brown. (12 Dec 1998) |
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| enameloma | A developmental anomaly in which there is a small nodule of enamel below the cementoenamel junction, usually at the bifurcation of molar teeth. Synonym: enamel drop, enamel nodule, enamel pearl. (05 Mar 2000) |
| enamelum | <dentistry> A hard ceramic which covers the exposed part of your teeth. (08 Jan 1998) |
| enanthal | CH3(CH2)5CHO; heptaldehyde;obtained from the ricinoleic acid of castor oil by chemical means; used in the manufacture of ethyl oenanthate, a constituent of many artificial essences (flavors). Synonym: enanthal, oenanthal. (05 Mar 2000) |
| enanthate | USAN-approved contraction for heptanoate, CH3(CH2)5COO-. (05 Mar 2000) |
| enanthem | Enanthema A mucous membrane eruption, especially one occurring in connection with one of the exanthemas. Origin: G. En, in, + anthema, bloom, eruption, fr. Antheo, to bloom (05 Mar 2000) |
| enanthema | <dermatology> An eruption upon a mucous surface. Origin: Gr. Anthema = a blossoming (13 Nov 1997) |
| enanthematous | Relating to an enanthem. (05 Mar 2000) |
| enanthesis | The skin eruption of a general disease, such as scarlatina or typhoid fever. Origin: G. En, in, + anthesis, full bloom (05 Mar 2000) |
| enantio- | Combining form meaning opposite, opposed, or opposing. Origin: G. Enantios, opposite (05 Mar 2000) |
| enantiomer | <chemistry> A pair of chiral isomers (stereoisomers) that are direct, nonsuperimposable mirror images of each other. (09 Jan 1998) |
| enantiomeric | Pertaining to enantiomerism. (05 Mar 2000) |
| enantiomerism | In chemistry, isomerism in which the molecules in their configuration are related to one another like an object and its mirror image (enantiomers), and consequently are not superimposable; enantiomerism entails optical activity, both enantiomers rotating the plane of polarised light equally, but in opposite directions. (05 Mar 2000) |
| enantiomorph | An enantiomer in crystal form. (05 Mar 2000) |
| enantiomorphic | 1. Relating to two objects, each of which is the mirror image of the other. 2. In chemistry, relating to isomers, the optical activities of which are equal in magnitude but opposite in sign. Synonym: enantiomorphous. Origin: enantio-+ G. Morphe, form (05 Mar 2000) |