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θ (EN)
文字、記号

文字 “θ”

θ, theta
  1. ギリシャ文字の8番目の文字。
    The letter θ is pronounced with “th” as in “think”.

記号 “θ”

θ
  1. (数学において)特に三角法や極座標で角度を表す変数。
    To find the value of θ, solve the equation cos θ = 0.5.
  2. (音声学)「thin」や「thank」のような無声音の歯擦音を表す記号。
    In the word "think", the "th" sound is written as θ in phonetics.