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Glossary of Chemistry Terms
beginning with letter K
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kernel Tweet Definition of kernel Like Definition of kernel on Facebook
noun
  1. The core, center, or essence of an object or system.
  2. A single seed or grain, especially of corn or wheat.
  1. (computing) The central part of many computer operating systems which manages the system's resources and the communication between hardware and software components.
    1. (context, US) The stone of certain fruits, such as peaches or plums.
    2. (mathematics) Those elements, in the domain of a function, which the function maps to zero.
kerosene Tweet Definition of kerosene Like Definition of kerosene on Facebook
noun
  1. A petroleum based thin and colorless fuel oil, (paraffin in British English.)
The lasted us all winter, so the furnace kept us always warm.
ketene Tweet Definition of ketene Like Definition of ketene on Facebook
noun
  1. (chemistry) any of a class of unsaturated ketones, having a general formula R1R2C=C=O, that react as if they were inner acid anhydrides
  2. (chemistry) the parent compound of this class, CH2C=O, an unstable, reactive colourless gas
keto Tweet Definition of keto Like Definition of keto on Facebook
noun
  1. (chemistry) the carbonyl group of a ketone
ketone Tweet Definition of ketone Like Definition of ketone on Facebook
noun
  1. (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.
    • acetone R1 = R2 = CH3
    • methyl ethyl ketone R1 = CH3, R2 = C2H5
    • camphor C₀H₇O
Krypton Tweet Definition of Krypton Like Definition of Krypton on Facebook
proper noun
  1. The name of a fictional planet in the w:Superman, Superman comics and films.

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