Lexic.us

Definition of Isomer

1. Noun. A compound that exists in forms having different arrangements of atoms but the same molecular weight.

Definition of Isomer

1. n. A body or compound which is isomeric with another body or compound; a member of an isomeric series.

Definition of Isomer

1. Noun. (chemistry) Any of two or more compounds with the same molecular formula but with different structure. ¹

2. Noun. (physics) Any of two or more atomic nuclei with the same mass number and atomic number but with different radioactive properties. ¹

¹ Source: wiktionary.com

Definition of Isomer

1. a type of chemical compound [n -S] : ISOMERIC [adj]

Medical Definition of Isomer

1. 1. One of two or more molecules that have the same chemical formula but have a different stereochemical arrangement of their atoms. 2. Nuclides having the same number of neutrons and protons but capable of existing, for a measurable time, in different quantum states with different energies and radioactive properties. Commonly, the isomer of higher energy decays to one of lower energy by the process of isomeric transition. (13 Nov 1997)

Lexicographical Neighbors of Isomer

Literary usage of Isomer

Below you will find example usage of this term as found in modern and/or classical literature:

1. Journal of the American Chemical Society by American Chemical Society (1879)
"Of the three remaining possibilities, the Cji isomer necessarily puts the six oxygen atoms ... Thus the steric inferiority of the C8i isomer is exposed. ..."

2. Proceedings of the Cambridge Philosophical Society by Cambridge Philosophical Society (1902)
"The at-isomer which was investigated first, is obtained from t\\e yS-isomer. ... The a-isomer could not be further purified by crystallisation since it was ..."

3. A Dictionary of Chemistry and the Allied Branches of Other Sciences by Henry Watts (1866)
"... of heat and sometimes with inflammation. — 6. In cyanogen gas it solidifies to a brown resin. 7. Dibromide of ethylene and its isomer, bromide of ..."

4. A Text-book of organic chemistry by Arnold Frederick Holleman (1908)
"This necessitates the conversion of one-half of the optically active substance into its optical isomer, it being sufficient that two of the groups or atoms ..."

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