spicule noun. ['spɪkju:l] L18.
[Anglicized from SPICULA noun¹, SPICULUM.]
1. Botany. = SPICULA noun¹ 3. Now rare or obsolete. L18.

2. Mycology. A sterigma of a basidium. M19-L19.

3. Zoology. A needle-like or sharp-pointed process or part; esp. each of the small pointed structures of calcite or silica which make up the skeleton of a sponge. M19.

4. A fine-pointed piece, splinter, or fragment of some hard substance; esp. in Medicine, a splinter of bone. M19.

5. Astronomy. Any of numerous short-lived, relatively small radial jets of gas observed in the chromosphere and lower corona of the sun. M20.

[TahlilGaran] English Dictionary ▲