Definitions for is-

This page provides all possible meanings and translations of the word is-

Random House Webster's College Dictionary


  1. Ref: 3rd pers. sing. pres. indic. of be 1

Origin of is:

bef. 900; ME, OE; c. ON es, er, Go ist, L est, Gk estí, OCS jestĭ, Skt asti


  1. isentropic.

    Category: Affix

    Ref: var. of iso- 3 before a vowel:


  1. Isaiah.

    Category: Bible

  2. island.

  3. isle.


  1. island.

  2. isle.

    Category: Geography (terms)


  1. is-(Prefix)

    form of iso- before a vowel

Webster Dictionary

  1. Is-

    see Iso-

  2. Is-

    a prefix or combining form, indicating identity, or equality; the same numerical value; as in isopod, isomorphous, isochromatic

  3. Is-

    applied to certain compounds having the same composition but different properties; as in isocyanic

  4. Is-

    applied to compounds of certain isomeric series in whose structure one carbon atom, at least, is connected with three other carbon atoms; -- contrasted with neo- and normal; as in isoparaffine; isopentane

Translations for is-

Kernerman English Multilingual Dictionary


indicating outward movement, as in outburst .

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