acicular definition

  • adjective:
    • Having the form of a needle: acicular crystals.
    • Needle-shaped; slender like a needle or bristle.
    • Having sharp points like needles.
    • Needle-shaped; slender like a needle or bristle, as some leaves or crystals; additionally, having razor-sharp things like needles.
    • thin and lengthy and pointed; as pine renders
  • others:
    • obtaining the form of a slender needle or stout bristle; having a sharp point like a needle: as, an acicular prism, like those of stibnite; an acicular costs, as that of a humming-bird. Other forms are aciculate, aciculated, aciculiform, and aciculine.

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