Botany Dictionary

  • Order

    Order

    A classification rank in biological taxonomy that is higher than family and lower than class.

  • Organic gardening

    Organic gardening

    A method of gardening that avoids the use of synthetic pesticides, herbicides, and fertilizers, focusing on natural processes and materials.

  • Organic

    Organic

    Referring to farming, gardening, or products that are produced without synthetic chemicals or fertilizers, relying on organic methods.

  • Organism

    Organism

    Any individual living thing, including plants, animals, fungi, bacteria, or protists, capable of carrying out life processes.

  • Orifice

    Orifice

    An opening or hole, such as the mouth of a flower or the opening of a seed pod.

  • Ortet

    Ortet

    The original, or parental, plant from which a clone or offshoot arises.

  • Ortho-

    Ortho-

    A prefix meaning ‘straight’ or ‘correct,’ often used in botanical terms to refer to plants or structures with a straight…

  • Orthostichous

    Orthostichous

    Referring to a leaf arrangement in which leaves are aligned in a single, vertical row along the stem.

  • Orthostichy

    Orthostichy

    The arrangement of leaves or other structures in a straight line along the stem or axis.

  • Orthotropic

    Orthotropic

    Describing a growth direction that is straight or vertically oriented, often referring to the growth of roots or shoots.