spiculum
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Rossiter in this autumn of 1917 was extremely interested in certain crucial experiments he was making with spiculum in sponge-cells; with scleroblasts, "mason-cells," osteoblasts, and "consciousness" in bone-cells.
From Mrs. Warren's Daughter A Story of the Woman's Movement by Sir Harry Hamilton Johnston
I pray you note that for many a day his carpet hath been the spicula of pine, and his atmosphere hath been perfumed by the fir-tree.
From A Breeze from the Woods, 2nd Ed. by William Chauncey Bartlett
Introducing the alum-cell, and placing the coating of hoar-frost at the intensely luminous focus of the electric lamp, not a spicula of the dazzling frost is melted.
From Six Lectures on Light Delivered In The United States In 1872-1873 by John Tyndall
These spicula are of the same diameter throughout their length; they are easily detached, so that the object-glass of the microscope soon becomes scattered over with them.
From Volcanic Islands by Charles Darwin
Some of the fibres are thickly covered with extremely minute spicula, occasionally aggregated into little tuffs; and hence they have a hairy appearance.
From Volcanic Islands by Charles Darwin
In some cases I have found spicula projecting from the inner plate of the skull, and pressing upon or even penetrating the dura mater.
From The Dog by William Youatt