isotope

See also: Isotope

English

A diagram of the three main isotopes of hydrogen.

Etymology 1

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

Pronunciation

• (Received Pronunciation) IPA^(key): /ˈaɪ.sə.təʊp/
• (US) enPR: ī'sətōp, IPA^(key): /ˈaɪ.sə.toʊp/

• Audio (US):

  (file)

Noun

isotope (plural isotopes)

1. (nuclear physics) 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.

Derived terms

• clumped isotope
• daughter isotope
• deisotope
• isotope analysis
• isotope dilution
• isotope effect
• isotope exchange
• isotope geochemistry
• isotope hydrology
• isotope map
• isotope separation
• isotope shift
• isotope signature
• isotope table
• medical isotope
• radio-isotope

 

Translations

atoms of the same element having a different number of neutrons

• Arabic: نَظِير (ar) m (naẓīr)
• Armenian: իզոտոպ (hy) (izotop)
• Asturian: isótopu m
• Basque: isotopo (eu)
• Belarusian: ізато́п m (izatóp)
• Breton: izotop (br) m
• Bulgarian: изото́п (bg) m (izotóp)
• Catalan: isòtop (ca) m
• Chinese:

  Hokkien: tông-ūi-sò͘

  Mandarin: 同位素 (zh) (tóngwèisù)

• Czech: izotop (cs) m
• Danish: isotop c
• Dutch: isotoop (nl) m
• Esperanto: izotopo
• Estonian: isotoop
• Finnish: isotooppi (fi)
• French: isotope (fr) m
• Galician: isótopo (gl) m
• Georgian: იზოტოპი (izoṭoṗi)
• German: Isotop (de) n
• Greek: ισότοπο (el) n (isótopo)
• Hindi: समस्थानिक (samasthānik)
• Hungarian: izotóp (hu)
• Icelandic: samsæta f, ísótópur m
• Ido: izotopo (io)
• Irish: iseatóp m
• Italian: isotopo (it) m
• Japanese: 同位体 (ja) (どういたい, dōitai)
• Khmer: អ៊ីសូតូប (ʼiisoutoup)
• Korean: 동위 원소 (dong'wi wonso)
• Lithuanian: izotopas m
• Malay: isotop (ms)
• Maori: kanoirite
• Norwegian:

  Bokmål: isotop (no) m

  Nynorsk: isotop m

• Persian: ایزوتوپ (fa) (izotop)
• Polish: izotop (pl) m
• Portuguese: isótopo (pt) m
• Romanian: izotop (ro) m
• Russian: изото́п (ru) m (izotóp)
• Slovene: izotop (sl) m
• Spanish: isótopo (es) m
• Swedish: isotop (sv) c
• Tagalog: kahasik
• Ukrainian: ізото́п m (izotóp)
• Vietnamese: đồng vị (vi)

See also

• isobar
• isotone

Etymology 2

Possible back-formation from isotopy.

Pronunciation

• (US) IPA^(key): /ˈaɪ.sə.toʊp/

Verb

isotope (third-person singular simple present isotopes, present participle isotoping, simple past and past participle isotoped)

1. (topology, transitive) To define or demonstrate an isotopy of (one map with another).

Related terms

• homotope

Anagrams

• pooiest, pooties

French

Pronunciation

• IPA^(key): /i.zo.tɔp/

• Audio (Paris):

  (file)

Adjective

isotope (plural isotopes)

1. (relational) isotope; isotopic

Noun

isotope m (plural isotopes)

1. isotope

Descendants

• → Romanian: izotop
• → Turkish: izotop

Further reading

• “isotope”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.

German

Adjective

isotope

1. inflection of isotop:
   1. strong/mixed nominative/accusative feminine singular
   2. strong nominative/accusative plural
   3. weak nominative all-gender singular
   4. weak accusative feminine/neuter singular

Latin

Noun

isotope

1. vocative singular of isotopus