non-conversion; no conversion
Computing term, usually referring to a key on Japanese keyboards that disables kana-to-kanji conversion during text input.
Pressing the non-conversion key during Japanese input cancels the conversion.
kana-only input; no-conversion-mode input
Compound of 無 (mu, 'without') and 変換 (henkan, 'conversion'), literally meaning 'non-conversion'. The term is used for a specific key on Japanese keyboards.