1The act of conveying inner thoughts, feelings, or ideas outwardly through words, expressions, actions, or works of art.
彼は自分の気持ちを言葉で表現するのが苦手だ。
He's not good at expressing his feelings in words.
この絵は画家の内面をよく表現している。
This painting expresses the artist's inner self very well.
もっと丁寧な表現を使ったほうがいい。
You should use more polite expressions.
ダンスは体で感情を表現する芸術だ。
Dance is an art form that expresses emotion through the body.
その表現は日本語では少し不自然に聞こえる。
That expression sounds a bit unnatural in Japanese.
2In mathematics, representing an object (e.g., a group) using another form such as symbols or matrices; a technical term.
群の表現論は現代数学の重要な分野の一つだ。
Representation theory of groups is one of the important fields of modern mathematics.
この対称性は行列を使って表現できる。
This symmetry can be represented using matrices.