acicular

[ uh-sik-yuh-ler ]

/ əˈsɪk yə lər /

shaped like a needle.

Metallurgy.

Origin of acicular

First recorded in 1785–95; acicul(a) + -ar¹

a·cic·u·lar·i·ty

[uh-sik-yuh-lar-i-tee] /əˌsɪk yəˈlær ɪ ti/, noun a·cic·u·lar·ly, adverb

achsah, achtung, achy, achylia, acicula, acicular, aciculate, aciculum, acid, acid anhydride, acid cell

Acicular, as-ik′ū-lar, adj. needle-shaped; slender and sharp-pointed.

Chambers's Twentieth Century Dictionary (part 1 of 4: A-D) |Various
Valve very narrow, lanceolate, acicular, with obtuse apices.

The Diatomaceae of Philadelphia and Vicinity |Charles Sumner Boyer
Soon Birdie and myself were a mass of acicular crystals; it was a true easterly fog.

Celebrated Women Travellers of the Nineteenth Century |W. H. Davenport Adams
Spores of Bacidia fuscorubella to illustrate the several-celled, hyaline, acicular type.

Ohio Biological Survey, Bull. 10, Vol. 11, No. 6 |Bruce Fink and Leafy J. Corrington

Crystals are prismatic, acicular or scaly in habit; they have a perfect cleavage parallel to the brachypinacoid (M in the figure).

Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 3 |Various