isomer

[ ahy-suh-mer ]

/ ˈaɪ sə mər /

noun

Chemistry. a compound displaying isomerism with one or more other compounds.

Also called nuclear isomer. Physics. a nuclide that exhibits isomerism with one or more other nuclides.

Origin of isomer

First recorded in 1865–70; back formation from isomeric

Words nearby isomer

isologue, isolysin, isolysis, isomagnetic, isomaltose, isomer, isomerase, isomeric, isomerism, isomerization, isomerize

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for isomer

Chavibetol, an isomer of eugenol, occurs in the ethereal oil obtained from Piper betle.
Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 8|Various
Besides this oil, cloves also contain two neutral bodies, eugenin and caryophyllin, the latter of which is an isomer of camphor.
Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5|Various
An isomer of chloral, parachloralide, is made by passing excess of dry chlorine into absolute methyl alcohol.
Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 3|Various
An isomer of cinnamic acid known as allo-cinnamic acid is also known.
Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 4|Various

According to this view hyoscyamine ought to be the hyoscinate of hyoscine, or at any rate an isomer of this body.
Scientific American Supplement, No. 324, March 18, 1882|Various

British Dictionary definitions for isomer

isomer

/ (ˈaɪsəmə) /

noun

chem a compound that exhibits isomerism with one or more other compounds

physics a nuclide that exhibits isomerism with one or more other nuclides

Derived forms of isomer

isomeric (ˌaɪsəˈmɛrɪk), adjective

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for isomer

isomer

[ ī′sə-mər ]

n.

Any of two or more substances that are composed of the same elements in the same proportions but differ in properties because of differences in the arrangement of atoms.

Any of two or more nuclei with the same mass number and atomic number that have different radioactive properties and can exist in any of several energy states for a measurable period of time.

Other words from isomer

i′so•mer′ic (-mĕr′ĭk) adj.

Scientific definitions for isomer

isomer

[ ī′sə-mər ]

Chemistry Any of two or more substances that have the same molecular formula but differ in their connectivity or spatial arrangement of atoms, or in their topology in macromolecules.

Physics Any of two or more nuclei with the same mass number and atomic number that have different radioactive properties and can exist in any of several energy states for a measurable period of time.

单词	isomer
释义	isomer [ ahy-suh-mer ] / ˈaɪ sə mər / noun Chemistry. a compound displaying isomerism with one or more other compounds. Also called nuclear isomer. Physics. a nuclide that exhibits isomerism with one or more other nuclides. Origin of isomer First recorded in 1865–70; back formation from isomeric Words nearby isomer isologue, isolysin, isolysis, isomagnetic, isomaltose, isomer, isomerase, isomeric, isomerism, isomerization, isomerize Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for isomer Chavibetol, an isomer of eugenol, occurs in the ethereal oil obtained from Piper betle. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 8\|Various Besides this oil, cloves also contain two neutral bodies, eugenin and caryophyllin, the latter of which is an isomer of camphor. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5\|Various An isomer of chloral, parachloralide, is made by passing excess of dry chlorine into absolute methyl alcohol. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 3\|Various An isomer of cinnamic acid known as allo-cinnamic acid is also known. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 4\|Various According to this view hyoscyamine ought to be the hyoscinate of hyoscine, or at any rate an isomer of this body. Scientific American Supplement, No. 324, March 18, 1882\|Various British Dictionary definitions for isomer isomer / (ˈaɪsəmə) / noun chem a compound that exhibits isomerism with one or more other compounds physics a nuclide that exhibits isomerism with one or more other nuclides Derived forms of isomer isomeric (ˌaɪsəˈmɛrɪk), adjective Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Medical definitions for isomer isomer [ ī′sə-mər ] n. Any of two or more substances that are composed of the same elements in the same proportions but differ in properties because of differences in the arrangement of atoms. Any of two or more nuclei with the same mass number and atomic number that have different radioactive properties and can exist in any of several energy states for a measurable period of time. Other words from isomer i′so•mer′ic (-mĕr′ĭk) adj. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for isomer isomer [ ī′sə-mər ] Chemistry Any of two or more substances that have the same molecular formula but differ in their connectivity or spatial arrangement of atoms, or in their topology in macromolecules. Physics Any of two or more nuclei with the same mass number and atomic number that have different radioactive properties and can exist in any of several energy states for a measurable period of time. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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