from The American Heritage® Dictionary of the English Language, 5th Edition.

  • adjective Tetravalent.

from The Century Dictionary.

  • noun A quadrivalent atom or element.
  • In chem., noting an atom the equivalence of which is four, or an element one atom of which is equivalent, in combining power, to four atoms of hydrogen; tetradic; tetratomic.

from the GNU version of the Collaborative International Dictionary of English.

  • adjective (Chem.) Having a valence of four; capable of combining with, being replaced by, or compared with, four monad atoms; tetravalent; -- said of certain atoms and radicals.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective chemistry Having a valence of four.
  • noun genetics Any quadrivalent chromosome.


Sorry, no etymologies found.


    Sorry, no example sentences found.


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