英语词汇neutron的起源、历史背景-英语词源词典

词汇	neutron
词源	neutron n. "electrically neuter particle of the atom," 1921, coined by U.S. chemist William D. Harkins (1873-1951) from neutral (adj.) + -on. First record of neutron bomb, which releases a large number of lethal neutrons but produces little blast, is from 1960. Neutron star attested from 1934, originally hypothetical; so called because it would be composed of densely packed neutrons. Entries linking to neutron neutral adj. 1540s, in alchemy, "composed of contrasting elements which, in proper proportion, neutralize each other," also, of states, rulers, etc., "refraining from taking sides in a fight, not engaged on or interfering with either side" (probably from a similar meaning of neutralis in Medieval Latin), from Latin neutralis, from neuter "neither the one nor the other, neither of two" (see neuter (adj.)). By 1550s of persons. Chemistry sense of "exhibiting neither acid nor alkaline qualities" is from 1660s. From 1711 in the sense of "of or belonging to a power not taking sides in a war or conflict." Of colors, "of low chroma, without positive quality of color," from 1821. Neutral corner is from boxing (1908), indicating the two corners of the ring not used between rounds by the fighters and their seconds. -on subatomic particle suffix, from ion. updated on May 29, 2019
随便看	self-aggrandizing self-analysis self-appointed self-assembly self-assertive self-assurance self-assured self-aware self-awareness self-begotten self-censorship self-centered self-cleaning self-complacency self-complacent self-conceit self-concept self-confessed self-confidence self-confident self-congratulation self-conscious self-contained self-control self-criticism

英语词源词典收录了45867条英语词源词条，基本涵盖了全部常用英语词汇的起源、历史，是研究英语词汇或通过词源学英语的必备工具。

neutron n.

Entries linking to neutron