Biology Dictionary

  • Polymorphonuclear

    Polymorphonuclear

    Describing white blood cells, such as neutrophils, that have a nucleus with multiple lobes, often involved in immune responses.

  • Polyp

    Polyp

    A growth or swelling of tissue, especially a type of growth in animals like corals or certain cnidarians, or abnormal…

  • Polypeptide

    Polypeptide

    A chain of amino acids linked together by peptide bonds, which constitutes a protein or part of a protein.

  • Polyphagia

    Polyphagia

    Excessive hunger or overeating, often associated with medical conditions such as diabetes mellitus.

  • Polyploidization

    Polyploidization

    The process by which an organism or cell gains one or more additional sets of chromosomes, leading to polyploidy.

  • Polyploidy

    Polyploidy

    The condition in which an organism has more than two complete sets of chromosomes, often leading to larger cells and…

  • Polysaccharides (also polysaccharoses)

    Polysaccharides (also polysaccharoses)

    Carbohydrates made up of multiple sugar molecules linked together, such as starch, cellulose, and glycogen.

  • Polytene chromosome

    Polytene chromosome

    A type of chromosome found in some organisms, notably in the salivary glands of certain insects, where it is formed…

  • Polytypic

    Polytypic

    Referring to a species or group that contains multiple different forms or types, often used to describe species with several…

  • Polyuria

    Polyuria

    Excessive urination, often associated with conditions such as diabetes mellitus or kidney disease.