Biology Dictionary

  • Woodland

    Woodland

    An area of land covered with a dense collection of trees, typically in regions with moderate climates.

  • Woody

    Woody

    Refers to plants, especially trees and shrubs, that have hard, lignified stems.

  • Worker bee

    Worker bee

    The female bees in a colony that do not reproduce but are responsible for foraging, defending the hive, and caring…

  • Writhing number

    Writhing number

    A measure used in animal studies, particularly in response to pain or discomfort, where the number of writhing movements is…

  • X chromosome

    X chromosome

    A type of sex chromosome in mammals and some other organisms that carries a large number of genes and determines…

  • X inactivation

    X inactivation

    The process in female mammals where one of the two X chromosomes in each cell is randomly silenced to ensure…

  • Xanthochroia

    Xanthochroia

    A condition characterized by yellow discoloration of the skin due to an excess of bilirubin or carotenoids.

  • Xanthoderma

    Xanthoderma

    A yellowish discoloration of the skin, often caused by the accumulation of carotenoids or by liver disease.

  • Xanthophyll

    Xanthophyll

    A class of yellow pigments found in plants, part of the carotenoid family, that play a role in photosynthesis.

  • Xanthous

    Xanthous

    Describing a yellowish coloration, often used to refer to the skin or hair in certain conditions or species.