acicular

Example Sentences

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The crystals are usually small and are prismatic or acicular in habit; they have a perfect cleavage parallel to the face lettered a in the adjoining figure.

From Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria" by Various

Spher′ūle, a little sphere; Spher′ūlite, a radiating spherical group of minute acicular crystals common in silicious volcanic rocks.—adjs.

From Chambers's Twentieth Century Dictionary (part 4 of 4: S-Z and supplements) by Various

Elongated, cylindrical, rounded at both ends; thick cuticle with acicular spicules; radula polystichous or wanting.

From Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 2 "Chicago, University of" to "Chiton" by Various

In igneous rocks of all kinds it is invariably present in small amounts as minute acicular crystals, and was one of the first constituents of the rock to crystallize out from the magma.

From Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 2 "Anjar" to "Apollo" by Various

Hyoscyamine crystallizes in the acicular form, with greater difficulty even than atropine, it also forms less compact crystals.

From Scientific American Supplement, No. 324, March 18, 1882 by Various