規正 is read as きせい (kisei) and means correction.
きせい
kisei
きそくただしい
regular
きりつただしい
well-ordered
せいき
せいじしきんきせいほう
Political Funds Control Act
せいきひょうげん
regular expression
せいきせい
regular student (undergraduate or graduate)
ふせいきせん
unconventional warfare
せいきか
normalization (e.g. in floating-point representation system)
ふせいき
irregularity
せいきちょっこうか
ortho-normalization
せいきげんご
regular language
せいきひん
genuine product