Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun An atom or group of atoms, such as a carboxyl group, in an organic compound that defines the structure of a family of compounds and determines the properties of the family.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun organic chemistry A
specific grouping ofelements that ischaracteristic of aclass ofcompounds , and determines someproperties andreactions of that class. - noun ecology A
collection oforganisms of specificmorphological ,physiological ,behavioral ,biochemical properties.
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