请输入您要查询的词汇:

 

词汇 periodic
词源

periodic adj.

"proceeding in a series of successive revolutions; pertaining to or of the nature of a cycle or period" 1640s, from French périodique (14c.), from Late Latin periodicus "that returns at stated intervals of time," from Latin periodus "recurring portion, cycle" (see period). From 1660s as "occurring at regular intervals of time."

The periodic table in chemistry (1889) is so called for the arrangement, in which similar properties recur at intervals in elements in the same area as you read down the rows of the table. This sense of the word is attested from 1872 (periodic law).

updated on April 07, 2020

随便看

 

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。

 

Copyright © 2000-2024 Newdu.com.com All Rights Reserved
更新时间:2025/5/2 0:33:28