プログレッシブ和英中辞典(第4版)の解説
せつ【説】
❶〔意見，主張〕an opinion
自分の説に固執する
adhere [stick] to one's opinion [views]
その点はお説の通りです
I quite agree with you on that point.／You are quite right about that.
❷〔学説〕a theory
説を立てる
advance [propose] a (new) theory
❸〔風評〕talk, a rumor，《英》 a rumour
彼女は離婚したという説がある
「Some people say [There is talk] that she has gotten a divorce.