How to say "em" in Japanese

• 全角ぜんかく
  no-adjectiveThe printing sense: an em, a unit equal to the type size, or an em quad. In Japanese 全角 is chiefly understood as a full-width character occupying one em square, hence its typesetting use.
  ファイルへの直じきリンだけはやめた方ほうがいいです。 URLの最初さいしょだけ全角ぜんかくｈｔｔｐにするとか、ちょっと工夫くふうしよう。↗

  It's a good idea to stop using direct links to files. Use a trick like starting the URL with double-width "h t t p" or something.
• 媒体終端ばいたいしゅうたん
  nounThe computing sense: EM, short for end of medium, a control character that marks the end of a data medium. Strictly technical; it has nothing to do with typography or microorganisms.
• 有用微生物群ゆうようびせいぶつぐん
  nounThe agricultural sense: EM, effective microorganisms — mixed cultures of beneficial microbes used in agriculture. A technical term; choose it only for that abbreviation, never for the printing or computing senses.

These correspond to unrelated senses of 'em': 全角 for the printing unit, 媒体終端 for the end-of-medium control character, and 有用微生物群 for effective microorganisms, so pick according to whether your context is typesetting, computing, or agriculture.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 全角ぜんかくem
• 媒体終端ばいたいしゅうたんend of medium
• 有用微生物群ゆうようびせいぶつぐんeffective microorganisms