Definition of acicular in English:

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Pronunciation: /əˈsikyələr/


(Chiefly of crystals) needle-shaped.
Example sentences
  • The acicular crystals are sometimes intergrown or twinned, causing a distortion that results in seemingly single crystals with relatively fat bases tapering to pointed terminations.
  • All of the acicular crystals are late Neoproterozoic
  • The largest amphibole crystals are embedded in the rock matrix, whereas the smaller acicular crystals line the hollows.


Early 18th century: from late Latin acicula 'small needle', diminutive of acus.

For editors and proofreaders

Syllabification: a·cic·u·lar

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