Adjacent Words

isomer definitions

	Tweet

WordNet (r) 3.0 (2005)

n
1: a compound that exists in forms having different arrangements of atoms but the same molecular weight

Merriam Webster's

noun Etymology: International Scientific Vocabulary, back-formation from isomeric Date: 1855 1. one of two or more compounds, radicals, or ions that contain the same number of atoms of the same elements but differ in structural arrangement and properties 2. a nuclide isomeric with one or more others

Oxford Reference Dictionary

n. 1 Chem. one of two or more compounds with the same molecular formula but a different arrangement of atoms and different properties. 2 Physics one of two or more atomic nuclei that have the same atomic number and the same mass number but different energy states. Derivatives: isomeric adj. isomerism n. isomerize v. (also -ise). Etymology: G f. Gk isomeres sharing equally (as ISO-, meros share)

Webster's 1913 Dictionary

Isomer I"so*mer, n. [See Isomeric.] (Chem.) A body or compound which is isomeric with another body or compound; a member of an isomeric series.

Moby Thesaurus

acid, acidity, agent, alkali, alkalinity, alloisomer, anion, antacid, artificial isotope, atom, base, biochemical, cation, chemical, chemical element, chromoisomer, compound, copolymer, deuterium, dimer, element, heavy chemicals, heavy hydrogen, high polymer, homopolymer, hydracid, inorganic chemical, ion, isobar, isotone, isotope, macromolecule, metamer, molecule, monomer, neutralizer, nonacid, nuclear isomer, organic chemical, oxyacid, polymer, protium, pseudoisomer, radical, radioactive isotope, radioisotope, reagent, strontium 90, sulfacid, trimer