reguline

re·gu·lus

 (rĕg′yə-ləs)

n. pl. reg·u·li (-lī) or reg·u·lus·es

1. The metallic mass that sinks to the bottom of a furnace or crucible during smelting.

2. A relatively impure intermediate product of various ores in smelting.

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[Latin rēgulus, diminutive of rēx, rēg-, king; see reg- in Indo-European roots.]

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reg′u·line (rĕg′yə-lĭn, -līn′) adj.

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Reg·u·lus

 (rĕg′yə-ləs)

n.

A bright binary star in the constellation Leo, approximately 78 light years from Earth.

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[Latin rēgulus, diminutive of rēx, rēg-, king; see regulus.]