isotope

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n. 同位素 [化] 同位素

发音

UK /ˈaɪ.sə.təʊp/
US /ˈaɪ.sə.toʊp/

词形变化

isotopes 复数 isotopes isotoped isotopes 三单 isotoping isotoping 现在分词 isotoped 过去式 isotoped 过去分词

释义与例句

n.
  1. 1.

    Any of two or more forms of an element where the atoms have the same number of protons, but a different number of neutrons within their nuclei. Thus, isotopes have the same atomic number but a different mass number.

    同位素

v.
  1. 1.

    To define or demonstrate an isotopy of (one map with another).

    及物 数学

词汇关系

名词

上位词 1

atom

下位词 3

deuterium heavy hydrogen radioisotope

相关短语

isotope dilution [化] 同位数稀释 [医] 同位素稀释 isotope shift [化] 同位素移位 isotope signature isotope dilutions isotope effect [化] 同位素效应 isotope exchange isotope exchanges isotope shifts isotope effects isotope signatures medical isotope daughter isotope clumped isotope

词源

From iso- (“equal”) + -tope (“place”), because the different isotopes of an element always occupy the same place in the periodic table. The term was coined by Scottish doctor Margaret Todd in 1909 and first used publicly on February 27, 1913 by English chemist Frederick Soddy.

来源：wiktionary