acicular

Example Sentences

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Much of the calcium in sea-water exists as sulphate; and on evaporation of a drop of sea-water under the microscope this sulphate is deposited as acicular crystals of gypsum.

From Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 7 "Gyantse" to "Hallel" by Various

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

It crystallizes in the orthorhombic system, and the crystals are either prismatic or acicular in habit.

From Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 3 "Apollodorus" to "Aral" by Various

Here, in storm or shine, is shelter from the winter wind or shade from the summer sun, while underfoot the fallen acicular leaves of the pines are impervious to the damp.

From Bournemouth, Poole & Christchurch by Haslehust, E. W.

Delicate acicular crystals of considerable length were found long ago in the Pentire Glaze mine near St Minver in Cornwall.

From Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 7 "Cerargyrite" to "Charing Cross" by Various