Regulation
Noun
きそく
「それが規則だ。分かったか？」「分かりました。」
"Those are the rules. Understand?" "I understand."
A standard rule is just one of the rules or regulations. Nothing weird about these rules.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.