定義（ていぎ、teigi）
- definition

The Japanese word 定義 定義 (ていぎ, teigi) primarily means "definition." It refers to the explanation of the meaning of a word, concept, or term. It can also mean to define or establish something. It's used to clarify what something *is* or what it means, often setting boundaries or parameters. The act of making a 定義 定義 is also a common usage of the word.

⚫︎ この言葉の定義を知りたいです。 Translation: I want to know the definition of this word. ⚫︎ 新しい法律の定義が曖昧だと問題になる。 Translation: It becomes a problem if the definition of a new law is ambiguous. ⚫︎ 彼は科学的根拠に基づいて、その現象を定義した。 Translation: He defined that phenomenon based on scientific evidence.

⚫︎ 定義 定義 is used in various contexts, including academic discussions, legal documents, technical manuals, and everyday conversations. ⚫︎ It is crucial when clarity and precision are important, to remove any ambiguity. ⚫︎ You can use it when asking for an explanation of a term. ⚫︎ It is also used in formal and informal situations, but more frequently in formal ones.

⚫︎ The standard way to write 定義 定義 is with the kanji 定義 定義 (ていぎ). ⚫︎ The hiragana reading is ていぎ (teigi). ⚫︎ There are no common variations in the okurigana.

⚫︎ 説明 (せつめい, setsumei): explanation ⚫︎ 意味 (いみ, imi): meaning ⚫︎ 語義 (ごぎ, gogi): meaning of a word ⚫︎ 規定 (きてい, kitei): definition (in the context of rules or regulations)

⚫︎ 無定義 (むていぎ, muteigi): undefined ⚫︎ 不明瞭 (ふめいりょう, fumeiryou): unclear, vague

数学の授業で、「関数」の定義を学びました。 ・Translation: In math class, I learned the definition of "function." ・Explanation: This sentence illustrates the use of 定義 定義 in an educational context, specifically referring to the definition of a mathematical term.

法律用語の定義は、専門的な知識が必要です。 ・Translation: The definition of legal terms requires specialized knowledge. ・Explanation: This sentence highlights the use of 定義 定義 in the legal field, emphasizing that understanding legal definitions often demands specific expertise.

The word 定義 定義 is a compound word derived from two kanji: 定 (tei) which means "to decide, fix, establish," and 義 (gi) which means "meaning, righteousness, definition." So, the word literally means "to establish meaning."