公こう式しき

noun which may take the genitive case particle 'no', noun, noun, used as a suffix

official; formal

Used for statements, announcements, procedures, or statuses that are officially recognized or formally established. Often appears as 公式の or 公式な.

• 政せい府ふは公こう式しきに声せい明めいを発はっ表ぴょうした。

  The government issued an official statement.

• これは公こう式しきの記き録ろくではありません。

  This is not an official record.

noun

formula

Refers to a mathematical, chemical, or other fixed expression. Also used in compounds like 公式集 (formula collection).

• この数すう学がくの公こう式しきを覚おぼえてください。

  Please memorize this mathematical formula.

noun, noun, used as a suffix

official account

Used for verified social media accounts of companies, organizations, or public figures. Often seen as 公式アカウント or simply 公式.

• この情じょう報ほうは公こう式しきツイッターで確かく認にんできます。

  You can check this information on the official Twitter account.