Definition of onmun in US English:

onmun

(also ŏmun, ö-mun, ŏnmun)

noun

historical
  • In Korea: = "hangul".

Origin

Late 19th century; earliest use found in William Griffis (1843–1928). From Korean en-mun (also transliterated ŏnmun) from en words, speech (from Chinese yàn spoken language) + mun letters, writing (from Chinese wén script, writing).

Pronunciation

onmun

/ˈɒnmʊn/