This is the 481st most frequent Chinese word.
史
"史" means "history" or "historical record."
In this sentence, '史' is used as a noun to mean 'history', specifying a field of study or narrative about the past.
这是一本关于中国史的书。
This is a book about Chinese history.
Here, '史' is part of '史上', which means 'in history', providing context to describe the timeframe or scope of greatness.
他被称为史上最伟大的科学家之一。
He is known as one of the greatest scientists in history.
In this example, '史' is combined in '史学家', meaning 'historian', indicating a person who specializes in the study of history.