单词	atomic theory
释义	atomic theory noun 1 : a theory of the nature of matter: all material substances are composed of minute particles or atoms of a comparatively small number of kinds and all the atoms of the same kind are uniform in size, weight, and other properties 2 : any of several theories of the structure of the atom especially : one based on experimentation and theoretical considerations holding that the atom is composed essentially of a small positively charged comparatively heavy nucleus surrounded by a comparatively large arrangement of electrons Example Sentences Recent Examples on the Web Before atomic theory—which states that all matter is made up of tiny particles called atoms—people didn’t have a good idea of what matter really was. Caroline Delbert, Popular Mechanics, 24 Feb. 2022 But Rovelli says that the degree of confirmation of atomic theory shouldn’t even be measured in the same units as that of string theory. Quanta Magazine, 16 Dec. 2015 String theory is not, say, 10 percent as confirmed as atomic theory; the two have different statuses entirely. Quanta Magazine, 16 Dec. 2015 Word History First Known Use 1738, in the meaning defined at sense 1 Medical Definition atomic theory noun 1 : a theory of the nature of matter: all material substances are composed of minute particles or atoms of a comparatively small number of kinds and all the atoms of the same kind are uniform in size, weight, and other properties called also atomic hypothesis 2 : any of several theories of the structure of the atom especially : one based on experimentation and theoretical considerations holding that the atom is composed essentially of a small positively charged comparatively heavy nucleus surrounded by a comparatively large arrangement of electrons
随便看	formican formicaria formicaries formicarii Formicariidae formicariidaes formicarioid formicarium formicariuses formicaroid formicary formicas formications formiccer formiccest formicer formicest Formicidae formicidaes formicide formicine formicivorous Formicoidea formicologist formidabilities

英语词典包含469781条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。