from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Having valence 4.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. having a valence of 4

from the GNU version of the Collaborative International Dictionary of English

  • adj. Having a valence of four; tetratomic; quadrivalent.

from The Century Dictionary and Cyclopedia

  • Same as quadrivalent.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. haveing a valence of four


Sorry, no etymologies found.


  • Since there are four distinct dengue viruses, the challenge is to concoct a four-way, or "tetravalent," vaccine, effective against all strains at once.

    The Bug Is Back

  • The new vaccine is tetravalent, meaning that it is designed to protect against all four dengue viruses, also called serotypes. - latest science and technology news stories

  • Every node in this graph was tetravalent: connected by four edges to four other nodes.

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  • SnCl_ ; the stannic, in which it is tetravalent as shown in the compounds SnO_ , SnS_ .

    An Elementary Study of Chemistry

  • Finally one atom of a tetravalent element such as carbon will combine with four atoms of a univalent element, as in the compound

    An Elementary Study of Chemistry

  • As part of that electron transfer reaction, hexavalent uranium (which has a charge of +6) becomes tetravalent uranium (which has a charge of +4).

    Ars Technica

  • In 2010, the first TandAb antibody AFM13 entered clinical trials and the bispecific, tetravalent human antibody has shown very promising safety, tolerability and activity in the treatment of Hodgkin Lymphoma.

    Reuters: Press Release

  • Affimed's proprietary and highly productive TandAb® technology enables the company to generate unique tetravalent, bispecific, fully human antibody formats that promise increased therapeutic potential and superior profiles compared to monoclonal antibodies.

    Reuters: Press Release

  • TandAbs®, which were invented and developed by Affimed scientists, are tetravalent bispecific antibody formats that have two binding sites for each antigen.

    Reuters: Press Release

  • "Our overall strategy was to identify the best individual candidate for each serotype, based on safety and ability to induce an immune response, and to then combine those into a tetravalent vaccine," explains Dr. Whitehead. - latest science and technology news stories


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