1. Overview of Meaning
The kanji “核” (kaku) means “nucleus” or “core.” It refers to the central part of something, whether it be in a scientific context, such as the nucleus of an atom, or in a more general sense, like the core of an idea or concept.
2. Formation and Radicals
The kanji “核” is a phonetic-ideographic character (形声文字). It is composed of the radical “木” (tree) on the left, which often relates to nature or growth, and the phonetic component “亥” (hai) on the right, which provides the pronunciation. This combination suggests a core or essential part of something that grows or develops.
3. Examples of Usage
Common words and phrases that include “核” are:
- 核兵器 (kakubuki) – nuclear weapons
- 核家族 (kakukazoku) – nuclear family
- 核酸 (kakusan) – nucleic acid
Example sentence in daily conversation:
「彼は核家族の一員です。」(Kare wa kakukazoku no ichiin desu.) – “He is a member of a nuclear family.”
4. Synonyms and Antonyms
Similar kanji with related meanings include:
- 中心 (chūshin) – center, which refers to the middle point of something.
- 根 (ne) – root, which indicates the foundational part of a plant or concept.
Antonyms include:
- 周辺 (shūhen) – periphery, which refers to the outer limits or edge of an area.
5. Cultural and Historical Background
The kanji “核” has significant relevance in Japanese culture, particularly in discussions about nuclear energy and weapons, especially post-World War II. It is often associated with the concept of safety and security in modern society.
Proverbs and idiomatic expressions that include “核” are less common, but the term is frequently used in political and scientific discourse, reflecting Japan’s unique position regarding nuclear technology.