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All Words Glossary
noun
- The core, center, or essence of an object or system.
- A single seed or grain, especially of corn or wheat.
- (computing) The central part of many computer operating systems which manages the system's resources and the communication between hardware and software components.
- (context, US) The stone of certain fruits, such as peaches or plums.
- (mathematics) Those elements, in the domain of a function, which the function maps to zero.
noun
- A petroleum based thin and colorless fuel oil, (paraffin in British English.)
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The lasted us all winter, so the furnace kept us always warm.
noun
- (chemistry) any of a class of unsaturated ketones, having a general formula R1R2C=C=O, that react as if they were inner acid anhydrides
- (chemistry) the parent compound of this class, CH2C=O, an unstable, reactive colourless gas
noun
- (chemistry) the carbonyl group of a ketone
noun
- (organic chemistry) A homologous series of organic molecules whose functional group is an oxygen atom joined to a carbon atom"by a double bond"in a carbon-hydrogen based molecule.
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- acetone R1 = R2 = CH3
- methyl ethyl ketone R1 = CH3, R2 = C2H5
- camphor Câ‚â‚€Hâ‚₇O
proper noun
- The name of a fictional planet in the w:Superman, Superman comics and films.
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