This is the 1471st most frequent Japanese word.
記さ
"記さ" is the continuative form of "記す," meaning "to write down" or "to record."
In this sentence, '記さ' is used in the form 記す to mean 'to write down' or 'record', which relates to documenting information in writing.
彼女は日記に今日は特別な日だったと記さりした。
She wrote down in her diary that today was a special day.
Here, '記さ' appears in the passive form 記されて, indicating that something is recorded or noted.
歴史書の古代の記録には、天気の変化が詳しく記されていた。
In the historical text's ancient records, weather changes were detailedly recorded.
In this example, '記さ' (記す in its root form) conveys the necessity of recording or noting rules.