Meaning and Usage
The word "公式" (こうしき) primarily means "formula" in mathematical or scientific contexts, referring to a fixed expression or rule. It also means "official" or "formal," used to describe something authorized, recognized, or done in a formal manner.
Common Contexts
- In math and science, "公式" refers to formulas like equations or expressions.
- In social or organizational contexts, it describes official announcements, events, or statements.
- It can describe formal settings or official roles.
Collocations and Patterns
- 公式発表 (こうしきはっぴょう): official announcement
- 公式サイト (こうしきサイト): official website
- 公式戦 (こうしきせん): official match/game
- 公式の場 (こうしきのば): official/formal occasion
Usage Notes
When using "公式" to mean "official," it implies authorization or recognition by an organization or authority. It is more formal than casual or unofficial terms. When referring to formulas, it is used in academic or technical contexts.
A common learner mistake is confusing "公式" with casual or unofficial expressions of rules or statements. Remember that "公式" implies formality or correctness, so it is not used for informal or personal opinions.