As`ter*ism (#), n. [Gr. , fr. star; cf. F. ast'erisme.]

1. Astron. (a)

A constellation.

[Obs.] (b)

A small cluster of stars.

2. Printing (a)

An asterisk, or mark of reference.

[R.] (b)

Three asterisks placed in this manner, &asterism;, to direct attention to a particular passage.

3. Crystallog.

An optical property of some crystals which exhibit a star-shaped by reflected light, as star sapphire, or by transmitted light, as some mica.


© Webster 1913.