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Acics

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• Acicula

  a needlelike part; spine, bristle, or needlelike crystal. a plural of . an . zoology. one of the slender, sharp stylets embedded in the parapodia of certain annelid worms, as the polychaetes. historical examples the banks of aripo are not the only localities, nor is the acicula the only mollusc, by which pearls are furnished. […]

• Acicular

  shaped like a needle. metallurgy. (of cast iron) containing ferrite in a needlelike form. (of an alloy) having a microstructure of needlelike components. historical examples hyoscyamine crystallizes in the acicular form, with greater difficulty even than atropine, it also forms less compact crystals. scientific american supplement, no. 324, march 18, 1882 various by repeated solutions […]

• Aciculate

  having . marked as with needle scratches. needle-shaped; acicular. historical examples aciculate: a surface that appears as if scratched with a needle. explanation of terms used in entomology john. b. smith adjective having aciculae marked with or as if with needle scratches

• Aciculum

  an . zoology. one of the slender, sharp stylets embedded in the parapodia of certain annelid worms, as the polychaetes. noun (pl) -lums, -la (-lə) a needle-like bristle that provides internal support for the appendages (chaetae) of some polychaete worms

• Acid anhydride

  see under (def 1). a compound formed by removing water from a more complex compound: an oxide of a nonmetal (acid anhydride) or a metal (basic anhydride) that forms an acid or a base, respectively, when united with water. a compound from which water has been abstracted. historical examples like most of the oxides of […]

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