A three-pointed decorative amulet, of bronze or jade, found throughout Southeast Asia

(insurance) Errors and omissions insurance.

(insurance) Abbreviation of directors and officers.

A subject-based qualification superseded in England by GCSEs, but still available as an international examination.

Alternative spelling of O-level

Alternative form of will-o'-the-wisp

(Indo-European linguistics) In Proto-Indo-European linguistics, an ablaut form of a Proto-Indo-European root, characterised by the presence of the */o/ vowel phoneme in place of */e/.

(linguistics) A word, especially a noun in Indo-European linguistics, whose stem ends in /o/.

plural of o-stem

A yellow diarylmethane dye used as a fluorescent stain.