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Meaning of acicular

a•cic•u•lar

Pronunciation: (u-sik'yu-lur), [key]
— adj.
  1. needle-shaped.
    1. (of cast iron) containing ferrite in a needlelike form.
    2. (of an alloy) having a microstructure of needlelike components.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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