WORD DETAIL
公式
こうしき
Examples
Included kanji
Study notes
1. Origins, structure, and basic meaning
- Structure:
公式is read asこうしきand denotes a mathematical formula or functions as a noun or adjectival noun meaning official. - Basic usage: A mathematical rule appears in
面積を求める公式, while an authorized result appears in公式な結果.
2. Common pitfalls and similar expressions
- Choosing the sense
- Calculation and geometry point to formula; an announcement by a competition or institution points to official status.
- Difference from
方程式方程式is an equation involving an unknown, while公式is an established formula or rule expressing a relation.