參見：
√
U+221A
,
&
#8730;
SQUARE ROOT
←
∙
[U+2219]
數學運算子
∛
→
[U+221B]
⎷
U+23B7
,
&
#9143;
RADICAL SYMBOL BOTTOM
←
⎶
[U+23B6]
雜項工業符號
⎸
→
[U+23B8]
跨語言
符號
平方根
，開平方
√
4
=
4
{\displaystyle {\sqrt {4}}}
= 2
(
語言學
)
用於表示所指是
詞根
。
參見
∜
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