acicula definition

  • noun:
    • A slender, needlelike component or structure, for instance the spines or bristles of some plants and animals and the crystals of specific minerals.
    • One of the needlelike or bristlelike spines or prickles of some animals and plants; additionally, a needlelike crystal.
    • One of the needlelike or bristlelike spines or prickles of some pets and plants; in addition, a needlelike crystal.
    • A needle, pin, or bodkin, of wood or bone, employed by Roman ladies as a hair-pin. It was maybe not smaller compared to an acus (which see), but of substandard material.
    • A spine or prickle of an animal or plant. Also called acicle.
    • A name applied to several genera of gastropods, and retained for the representative genus of the family Aciculidæ, inhabiting Europe. A. fusca is the best-known form.
    • A genus of worms.
    • Plural of aciculum.
    • In botany: The bristle-like prolongation of the rachilla of a grass-spike.
    • A tooth-like procedure within the hymenium of specific fungi.
    • a needlelike part or framework of a plant or pet or crystal; as a spine or bristle or crystal

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