Definition of acicular in English:


Line breaks: aci¦cu|lar
Pronunciation: /əˈsɪkjʊlə


  • (Chiefly of crystals) needle-shaped.
    More 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) + -ar1.

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grotesque quality or grotesque things collectively