Etymology: Modern Latin, an irregular diminutive of Latin spica "spike".
- A sharp, pointed crystal, especially of ice.
- (zoology) A sharp, needle-like structure, especially those making up the skeleton of a sponge.
- (astronomy) A small radial emission of gas seen in the chromosphere and corona of the sun.
Supplemental Details:Sponsor an extended definition for spiculum for as little as $10 per month. Click here to contact us.