1704, "kernel of a nut," 1708, "head of a comet," from Latin nucleus "kernel," from nucula "little nut," diminutive of nux (genitive nucis) "nut," from PIE *kneu- "nut" (cognates: Middle Irish cnu, Welsh cneuen, Middle Breton knoen "nut," Old Norse hnot, Old English hnutu "nut"). General sense of "central part or thing, about which others cluster" is from 1762. Use in reference to cells first recorded 1831. Modern atomic meaning is 1912, first by Ernest Rutherford, though theoretical use for "central point of an atom" is from 1844, in Faraday.
实用例句
1. The repulsive force within the nucleus is enormous.
核子内部的斥力是巨大的。
来自柯林斯例句
2. the nucleus of a cell
细胞核
来自《权威词典》
3. These paintings will form the nucleus of a new collection.
这些画将构成新的收藏系列的基础。
来自《权威词典》
4. These young people formed the nucleus of the club.
这些年轻人成了俱乐部的核心.
来自《简明英汉词典》
5. The nucleus of an atom consists of neutrons, protons and other particles.
