• protagonist

    A protagonist is the main character in a play, novel, or real event such as a battle or struggle.

  • protean

    Something or someone that is protean is adaptable, variable, or changeable in nature.

  • protocol

    Protocol is the rules of conduct or proper behavior that a social situation demands.

  • protein

    any of a large group of nitrogenous organic compounds that are essential constituents of living cells

  • proton

    a stable particle with positive charge equal to the negative charge of an electron

  • prototype

    a standard or typical example

  • protozoa

    in some classifications considered a superphylum or a subkingdom

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