E.o. Definition

abbreviation
Ex officio (by virtue of office)
American Heritage
letter

The fifth letter of the English alphabet, called e and written in the Latin script.

Wiktionary
numeral

The ordinal number fifth, derived from this letter of the English alphabet, called e and written in the Latin script.

Wiktionary
symbol

(ESRB rating) Everyone.

Wiktionary
Wiktionary
noun

(street slang) The illicit drug ecstasy (MDMA).

Wiktionary

The grade below D in some grading systems. In most such systems, it is a failing grade.

Wiktionary
pronoun

(history) A state in ancient China of varying location in present-day Shanxi, Henan, and Hubei.

Wiktionary

(history) Its capital, also known as Echeng and Ezhou.

Wiktionary

Origin of E.o.

  • From Mandarin 鄂 (È), formed as a phono-semantic character from 咢 ("beat a drum", reconstructed Old Chinese pronunciation *Ngˤak) + 阝, the combinatorial form of 邑 ("area", "place").

    From Wiktionary