Spiculum
/ˈspɪkjʊləm/ noun
noun ·Rare ·Advanced level
Definitions
Noun
- 1 A thrusting javelin used by Romans that replaced the pilum in the late 3rd century.
- 2 small pointed structure serving as a skeletal element in various marine and freshwater invertebrates e.g. sponges and corals wordnet
- 3 A sharp, pointed crystal, especially of ice.
- 4 A sharp, needle-like structure, especially those making up the skeleton of a sponge.
- 5 A small radial emission of gas seen in the chromosphere and corona of the sun.
Etymology
From Latin spīculum (“a little sharp point”), from spīcum, alternative form of spīca (“point, spike”).