- (obsolete) The katakana syllable ヲ (wo), whose equivalent in hiragana is を (wo). It is the forty-seventh syllable of the gojūon order, and its position in gojūon tables is ワ行オ段 (WA-gyō, O-dan; “row WA, section O”).
- (used as a particle) The katakana syllable ヲ (o), whose equivalent in hiragana is を (o). It is the forty-seventh syllable of the gojūon order, and its position in gojūon tables is ワ行オ段 (WA-gyō, O-dan; “row WA, section O”).
- Unlike the hiragana system, used for Japanese language words that kanji does not cover, the katakana syllabary is used primarily for transcription of foreign language words into Japanese and the writing of loan words (collectively gairaigo), as well as to represent onomatopoeia, technical and scientific terms, and the names of plants, animals, and minerals. Names of Japanese companies, as well as certain Japanese language words, are also written in katakana rather than the other systems.
Because the hiragana equivalent, を, is used almost exclusively as the direct object particle, and particles are usually written in hiragana, ヲ is seldom used.
- For a list of words starting with ヲ (wo) see: Special:Allpages/ヲ