also: にちへん
noun
kanji 'day' radical at left (radical 72)
Refers to the 日 radical when it appears on the left side of a kanji, as in 晴. Used in discussing kanji composition.
「晴」の左側は日偏です。
The left side of 晴 is the 'day' radical.
Compound of 日 (hi/nichi, 'sun, day') and 偏 (hen, 'left-side radical').