Phrase guide

atomic number

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

noun

Meaning 1

The number of protons in an atom. Symbol: Z

Definition source: English Wiktionary via Wiktextract

Topics: chemistry, natural-sciences, physical-sciences, physics

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

the order of an element in Mendeleyev's table of the elements; equal to the number of protons in the nucleus or electrons in the neutral state of an atom of an element

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: number

Narrower terms: magic number

History

Etymology

No etymology was provided for this word.

Across languages

Translations

112 source translations are retained for this English entry.

  • Afrikaans: atoomgetal — number of protons
  • Albanian: numri atomik — number of protons
  • Arabic: عَدَد ذَرِّيّ (ʕadad ḏarriyy) — number of protons
  • Aragonese: numero atomico — number of protons
  • Armenian: ատոմական համար (atomakan hamar) — number of protons
  • Asturian: númberu atómicu — number of protons
  • Basque: atomo-zenbaki — number of protons
  • Belarusian: зарадавы лік (zaradavy lik) — number of protons
  • Bengali: পারমাণবিক সংখ্যা (parmanobik śoṅkha) — number of protons
  • Bulgarian: а́томен но́мер (átomen nómer) — number of protons
  • Burmese: အက်တမ် အမှတ်စဉ် (aktam a.hmatcany) — number of protons
  • Catalan: nombre atòmic — number of protons
  • Chechen: дуладаларан терахь (duladalaran teraḥr) — number of protons
  • Chinese Mandarin: 原子序數 /原子序数 (yuánzǐ xùshù) — number of protons
  • Chinese Mandarin: 原子序 (yuánzǐxù) — number of protons
  • Chuvash: атомӑн номерӗ (at̬omăn nomerĕ) — number of protons
  • Czech: atomové číslo — number of protons
  • Czech: protonové číslo — number of protons
  • Danish: atomnummer — number of protons
  • Dutch: atoomnummer — number of protons
  • Dutch: atoomgetal — number of protons
  • Esperanto: atomnumero — number of protons
  • Esperanto: atomnombro — number of protons
  • Estonian: aatominumber — number of protons
  • Estonian: aatomnumber — number of protons
  • Fiji Hindi: atomic number — number of protons
  • Finnish: järjestysluku — number of protons
  • Finnish: atomiluku — number of protons
  • French: numéro atomique — number of protons
  • French: nombre atomique — number of protons
  • Saterland Frisian: atomtaal — number of protons
  • West-Frisian: atoomnûmer — number of protons
  • Galician: número atómico — number of protons
  • Georgian: ატომური ნომერი (aṭomuri nomeri) — number of protons
  • Georgian: ატომური რიცხვი (aṭomuri ricxvi) — number of protons
  • German: Ordnungszahl — number of protons
  • German: Kernladungszahl — number of protons
  • German: Atomnummer — number of protons
  • Greek: ατομικός αριθμός (atomikós arithmós) — number of protons
  • Gujarati: પરમાણુ ક્રમાંક (parmāṇu kramā̃k) — number of protons
  • Haitian Creole: nonm atomik — number of protons
  • Hebrew: מספר אטומי — number of protons
  • Hindi: परमाणु क्रमांक (parmāṇu kramāṅk) — number of protons
  • Hungarian: rendszám — number of protons
  • Icelandic: sætistala — number of protons
  • Ido: atomala nombro — number of protons
  • Indonesian: nomor atom — number of protons
  • Ingush: зирхата номер (zirxata nomer) — number of protons
  • Interlingua: numero atomic — number of protons
  • Irish: uimhir adamhach — number of protons
  • Italian: numero atomico — number of protons
  • Japanese: 原子番号 (genshi bangō) — number of protons
  • Javanese: nomer atom — number of protons
  • Kannada: ಪರಮಾಣು ಸಂಖ್ಯೆ (paramāṇu saṅkhye) — number of protons
  • Kazakh: атомдық нөмір (atomdyq nömır) — number of protons
  • Korean: 원자번호 (wonjabeonho) — number of protons
  • Central Kurdish: گەردیلە ژمارە (gerdîle jmare) — number of protons
  • Kyrgyz: атомдук номер (atomduk nomer) — number of protons
  • Latin: numerus atomicus — number of protons
  • Latvian: atomskaitlis — number of protons
  • Limburgish: atoomnómmer — number of protons
  • Lithuanian: atomo numeris — number of protons
  • Lombard: nümer atomich — number of protons
  • Luxembourgish: Uerdnungszuel — number of protons
  • Macedonian: атомски број (atomski broj) — number of protons
  • Malay: nombor atom — number of protons
  • Malayalam: അണുസംഖ്യ (aṇusaṅkhya) — number of protons
  • Māori: tau iraoho — number of protons
  • Marathi: अणुक्रमांक (aṇukramāṅka) — number of protons
  • Mongolian: атомын дугаар (atomyn dugaar) — number of protons
  • Nepali: परमाणु क्रमाङ्क (parmāṇu kramāṅka) — number of protons
  • Norwegian Bokmål: atomnummer — number of protons
  • Norwegian Nynorsk: atomnummer — number of protons
  • Odia: ପରମାଣୁ କ୍ରମାଙ୍କ (paramāṇu kramāṅka) — number of protons
  • Persian: عدد اتمی ('adad-e atomi) — number of protons
  • Polish: liczba atomowa — number of protons
  • Portuguese: número atômico — number of protons
  • Portuguese: número atómico — number of protons
  • Punjabi: ਪਰਮਾਣੂ ਸੰਖਿਆ (parmāṇū saṅkhiā) — number of protons
  • Punjabi: ایٹمی نمبر — number of protons
  • Romanian: număr atomic — number of protons
  • Romanian: număr de ordine atomic — number of protons
  • Romanian: număr de protoni — number of protons
  • Russian: а́томное число́ (átomnoje čisló) — number of protons
  • Russian: а́томный но́мер (átomnyj nómer) — number of protons
  • Russian: заря́довое число́ (zarjádovoje čisló) — number of protons
  • Russian: поря́дковый но́мер (porjádkovyj nómer) — number of protons
  • Serbo-Croatian: atomski broj — number of protons
  • Sicilian: nùmmuru atòmicu — number of protons
  • Sindhi: ايٽمي نمبر (āeṭme ̃mbr) — number of protons
  • Sinhalese: පරමාණුක ක්රමාංකය (paramāṇuka kramāṁkaya) — number of protons
  • Slovak: atómové číslo — number of protons
  • Slovak: protónové číslo — number of protons
  • Slovene: vrstno število — number of protons
  • Somali: tiro atam — number of protons
  • Spanish: número atómico — number of protons
  • Sundanese: nomer atom — number of protons
  • Swahili: namba atomia — number of protons
  • Swedish: atomnummer — number of protons
  • Tagalog: atomikong bilang — number of protons
  • Tamil: அணு எண் (aṇu eṇ) — number of protons
  • Telugu: పరమాణు సంఖ్య (paramāṇu saṅkhya) — number of protons
  • Thai: เลขอะตอม — number of protons
  • Turkish: atom numarası — number of protons
  • Ukrainian: атомний номер (atomnyj nomer) — number of protons
  • Urdu: جوہری عدد — number of protons
  • Uzbek: atom raqami — number of protons
  • Venetan: nùmaro atòmego — number of protons
  • Vietnamese: số nguyên tử — number of protons
  • Võro: aadomarv — number of protons
  • Welsh: rhif atomig — number of protons
  • Yakut: элэмиэн атомун нүөмэрэ (elemien atomun nüömere) — number of protons