すいにょう

Meanings

kanji radical 35 (suinyō)

usually written using kana alone

Refers to the kanji radical 夊, which appears at the bottom of characters like 夏 and 夐. Used in kanji dictionaries and discussions of character structure.

「夏なつ」の下したの部ぶ分ぶんは夊すい繞にょうと呼よばれる部ぶ首しゅです。
The bottom part of '夏' is the radical called suinyō.