Translation guide
The central or most important part of something, or the core of an atom or cell. Japanese uses different words depending on context.
Referring to the core group, idea, or element around which something develops.
General term for 'core' or 'nucleus' in abstract, organizational, or physical senses. Very common.
He is the nucleus of the team.
Please explain the core concept of this theory.
Means 'center' or 'heart'. Often used for physical or metaphorical centers.
Means 'core' or 'kernel', often used for the central part of an organization or system.
The positively charged central part of an atom.
The membrane-bound organelle in eukaryotic cells containing genetic material.
The solid central part of a comet.
Used in astronomy for comet nucleus. Often part of compound 彗星核 (すいせいかく).
The central part of a syllable, usually a vowel.
Technical linguistics term. Rare outside academic contexts.
While 核 is the direct translation, it can sound technical. For everyday 'center' or 'heart', 中心 (ちゅうしん) is often more natural.
There is a pond at the center of the park.
その都市は商業の中心地だ。
The city is a commercial nucleus.
彼らは会社の中核を担っている。
They form the nucleus of the company.
Standard scientific term for atomic nucleus.
The atomic nucleus consists of protons and neutrons.
Biological term for cell nucleus. Often shortened to 核 in context.
The cell nucleus contains DNA.
彗星の核は氷と塵でできている。
The comet's nucleus is made of ice and dust.
The syllable nucleus in Japanese is usually a vowel.