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isomer
Definitions
[ˈʌɪsəmə], (Noun)
Definitions:
- each of two or more compounds with the same formula but a different arrangement of atoms in the molecule and different properties
- each of two or more atomic nuclei that have the same atomic number and the same mass number but different energy states
Phrases:
Origin
:
mid 19th century: from Greek isomerēs ‘sharing equally’, from isos ‘equal’ + meros ‘a share’
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definition by Oxford Dictionaries