noun
not yet occurred; not yet appeared
Used for events, phenomena, or things that have not yet happened or come into existence. Often appears in formal or written contexts.
その事故は未発のままだった。
The accident had not yet occurred.
noun which may take the genitive case particle 'no', noun
undiscovered; unpublished; not yet made public
Describes things that are not yet known, invented, or released. Common in contexts like research, inventions, or official announcements.
未発の新薬がまだたくさんある。
There are still many undiscovered new drugs.
その論文は未発のままです。
The paper remains unpublished.
Compound of 未 (mi, 'not yet') and 発 (hatsu, 'occur, appear, publish'). The reading みはつ follows standard on'yomi. The word is a Sino-Japanese compound used primarily in formal or written language.