Definition of obolus in US English:

obolus

(also obulus)

noun

  • 1Ancient History= "obol". Now rare.

  • 2Palaeontology (In form Obolus) a genus of fossil brachiopods having a smooth orbicular shell, widespread in Cambrian and Ordovician rocks; (also obolus) a brachiopod of this genus.

Origin

Late Middle English (in an earlier sense). From classical Latin obolus an obol, a small weight (Pliny and Celsus, a medical writer), in post-classical Latin also halfpenny (frequently in British sources 1086–1534), apothecaries' weight from ancient Greek (Attic) ὀβολός an obol, in Hellenistic Greek also a small weight (Galen) from ὀβελός, with vowel assimilation.

Pronunciation

obolus

/ˈɒbələs/