How to say "binary" in Japanese

• 二元にげんCommon
  no-adjectiveCovers 'binary' in the sense of a binary system as a duality between two elements. Used when describing systems or frameworks built on two opposing principles, as in philosophy or policy.
• バイナリ
  no-adjectiveThe loanword for 'binary' in computing, referring to binary files or binary data. A direct, technical choice in software contexts, though less common than native alternatives in writing.
• 二進にしん
  na-adjective, nounRefers to 'binary' in the mathematical sense of base-two notation, as in binary numerals. Use this when talking about representing numbers with only 0 and 1.
• 二値にち
  no-adjectiveMeans 'binary' as two-valued, describing variables or logic that take exactly one of two values. Suited to technical discussions of two-valued logic or data.
• 二項にこう
  no-adjectivePrimarily means 'binomial' or 'dyadic' in mathematics, and only marginally 'binary'. Seldom the word you want for plain 'binary'; reach for it in binomial-expression contexts instead.

Choose 二元 for binary systems in the general duality sense, 「バイナリ」 for computing, 二進 for base-two, 二値 for two-valued data, and 二項 for binomial or dyadic mathematical contexts.

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

• 二元にげんduality
• バイナリbinary
• 二進にしんbinary
• 二値にちbinary
• 二項にこうbinomial