英语词汇radar的起源、历史背景-英语词源词典

词汇	radar
词源	radar; laser. These are among the most widely used and last- ing of scientific acronyms. Radar was coined from radio detect- ing and ranging during World War II, while laser came after the war, from light amplification by stimulated emission of ra- diation. The English alphabet can produce 456,976 acronyms composed of four letters and hundreds of thousands more if ei- ther additional or fewer letters are used. See quasar.
随便看	oriflamme origami orlando florida orrery orthodoxy osage osage orange oscar oscar asche oscillate oslerize osprey os sacrum ostracism ostrich ostrich stomach otaku o-tay other fish to fry other people-s bread tastes better otorhinolaryngologist ottoman ouch oud ought to be bored for the hollow horn

英语词源词典收录了13259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。