核かく

noun, noun which may take the genitive case particle 'no'

nuclear weapons

Abbreviation for 核兵器; often used in compounds or contexts discussing nuclear arms.

See also: 核兵器

• 核かくの脅きょう威いは依い然ぜんとして存そん在ざいする。

  The threat of nuclear weapons still exists.

noun

atomic nucleus

Physics term for the central part of an atom.

See also: 原子核

• 原げん子し核かくは陽よう子しと中ちゅう性せい子しからなる。

  The atomic nucleus consists of protons and neutrons.

noun

cell nucleus

Biology term for the membrane-bound organelle containing genetic material.

See also: 細胞核

• 細さい胞ぼう核かくにはDNAが含ふくまれている。

  The cell nucleus contains DNA.

noun

condensation nucleus

Meteorology term for a particle on which water vapor condenses.

See also: 凝結核

• 雲くもの形けい成せいには凝ぎょう結けつ核かくが必ひつ要ようだ。

  Condensation nuclei are necessary for cloud formation.

noun

planetary core

Astronomy term for the central region of a planet.

• 地ち球きゅうの核かくは鉄てつとニッケルでできている。

  The Earth's core is made of iron and nickel.

noun

ring; cyclic core

Chemistry term for the ring structure in a cyclic compound.

• ベンゼン核かくは六ろっ角かく形けいの構こう造ぞうを持もつ。

  The benzene ring has a hexagonal structure.

noun

kernel; core

Mathematics term, e.g., the kernel of a linear map or the core of a game.

• 線せん形けい写しゃ像ぞうの核かくは零ぜろ空くう間かんとも呼よばれる。

  The kernel of a linear map is also called the null space.

noun

pearl nucleus

The bead or piece of mantle tissue inserted into a mollusk to form a cultured pearl.

• 養よう殖しょく真しん珠じゅの核かくにはドブ貝がいが使つかわれることが多おおい。

  Freshwater mussel shells are often used as the nucleus for cultured pearls.