How to say "linear" in Japanese

• リニアCommon
  na-adjective, nounThe katakana loanword, found mainly in engineering and technology; it is the word behind Japan's maglev line. For the mathematical sense of 'linear', 線形 is the word you want instead.
• 線形せんけいCommon
  no-adjective, na-adjectiveThe kanji term for the mathematical and scientific sense: linear functions, equations, and proportional relationships. This is the word you want in academic and technical writing, rather than リニア.

Choose 線形 for the mathematical and scientific sense of 'linear' — functions, equations, proportional relationships; 「リニア」 is the katakana loanword, used mainly in engineering and technology, notably Japan's maglev line.

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

• リニアlinear
• 線形せんけいlinear
• 線状せんじょうlinear
• 直線的ちょくせんてきlinear
• 糸状しじょうstringlike
• 直鎖ちょくさstraight-chain
• 一次いちじlinear (function, equation)