isotope

Etymology 1
From, because the different isotopes of a chemical element always occupy the same position in the periodic table of elements. The term was and first used publicly on February 27, 1913 by English chemist.

Noun

 * 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.

Usage notes
Technically, isotopes are nuclides having the same atomic number but different mass number. In practice, the term isotope is often used instead of nuclide.

Translations

 * Arabic:
 * Armenian:
 * Asturian: isótopu
 * Basque:
 * Belarusian: ізато́п
 * Breton:
 * Bulgarian:
 * Catalan:
 * Chinese:
 * Hokkien: tông-ūi-sò͘
 * Mandarin:
 * Czech:
 * Danish: isotop
 * Dutch:
 * Esperanto: izotopo
 * Estonian: isotoop
 * Finnish:
 * French:
 * Galician:
 * Georgian: იზოტოპი
 * German:
 * Greek:
 * Hindi: समस्थानिक
 * Hungarian:
 * Icelandic: samsæta, ísótópur
 * Ido:
 * Irish: iseatóp
 * Italian:
 * Japanese:
 * Khmer: អ៊ីសូតូប
 * Korean: 동위 원소
 * Lithuanian: izotopas
 * Malay:
 * Maori: kanoirite
 * Norwegian:
 * Bokmål:
 * Nynorsk: isotop
 * Persian:
 * Polish:
 * Portuguese:
 * Romanian:
 * Russian:
 * Slovene:
 * Spanish:
 * Swedish:
 * Tagalog: kahasik
 * Ukrainian: ізото́п
 * Vietnamese:

Etymology 2
Possible back-formation from.

Verb

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

Adjective

 * 1)  ; isotopic