atomic number

əˈtɑːmɪk ˈnʌmbər

Definition

Definition of atomic number - Reverso English Dictionary

Noun

element ID

TECH.

count of protons, matching electrons in a neutral atom

TECH.

Oxygen has atomic number 8.
Hydrogen has the lowest atomic number on the periodic table.
Elements are arranged in order of increasing atomic number.

Add a suggestion |

Feedback:

Expressions with atomic

atomic bomb

something with very powerful effect or impact

His resignation was an atomic bomb in the political scene.

atomic explosion

sudden and powerful impact like a nuclear blast

The news hit the community like an atomic explosion.

atomic weapon

weapon using nuclear reactions for explosive power

The country tested an atomic weapon last year.

atomic wedgie

prank pulling underpants over the head causing discomfort

He gave his friend an atomic wedgie at the party.

atomic cocktail

mixed alcoholic beverage from Las Vegas

She ordered an atomic cocktail at the bar.

atomic war

war in which countries use atomic or other nuclear weapons

Writers in the 1950s often imagined an atomic war destroying major cities.

Expressions with number

lucky number

personally significant number believed to bring luck

Her lucky number is 23 because she was born on the 23rd.

number games

activities involving numbers for fun or learning

The teacher used number games to make math fun for the students.

magic number

number believed to have mystical powers

Many cultures consider seven as a magic number..

opposite number

thing with the same function as another

The new software is the opposite number to our current system.

call someone's number

contact someone by phone

I need to call her number to confirm the meeting time.

have someone's number

possess someone's phone number or contact information

I have her number if you need it.

get someone's number

obtain someone's phone number for contact

He asked to get her number after the party.

good number of

det.

indicates a considerable quantity of something

There were a good number of people at the event.

quite a number

large quantity of something

There were quite a number of people at the event.

round number

approximate number often ending in zeroes

He gave a round number of 5000 as the estimate.

Terms with atomic number included in their meaning

💡 A powerful way to uncover related words, idioms, and expressions linked by the same idea — and explore meaning beyond exact word matches.

carbon

chemistry

chemical element with atomic number 6

chlorine

chemistry

chemical element with symbol Cl and atomic number 17

cobalt

metal

chemical element with atomic number 27

helium

element uses

chemical element with atomic number 2, used in balloons and research

isotope

chemistry

forms of a chemical element with same atomic number, different mass numbers

sulfur

chemistry

chemical element with atomic number 16

zinc

chemistry

chemical element with atomic number 30

periodic table

chemistry

chart of elements arranged by atomic number and similar properties in columns

View all translations of atomic number

✨Click below to see the appropriate translations facing each meaning.

French:numéro atomique, ...
German:Ordnungszahl, ...
Italian:numero atomico, ...
Spanish:número atómico, ...
Portuguese:número atómico, ...
Chinese:原子序数, ...
Japanese:原子番号, ...
Arabic:الرَّقْمُ الذَّرِّيّ, ...
Hebrew:מִסְפָּר אַטּוֹמִי, ...
Russian:атомный номер, ...
Ukrainian:атомний номер, ...
Hindi:परमाणु क्रमांक, ...
Bengali:পারমাণবিক সংখ্যা, ...
Catalan:nombre atòmic, ...
Czech:protonové číslo, ...
Danish:atomnummer, ...
Dutch:atoomnummer, ...
Greek:ατομικός αριθμός, ...
Hungarian:rendszám, ...
Khmer:លេខអាតូម, ...
Korean:원자 번호, ...
Persian:عدد اتمی, ...
Polish:liczba atomowa, ...
Portuguese (BR):número atômico, ...
Romanian:număr atomic, ...
Swedish:atomnummer, ...
Thai:เลขอะตอม, ...
Turkish:atom numarası, ...
Vietnamese:số hiệu nguyên tử, ...

Discover how Reverso redefines the dictionary

Go beyond “simple words”

100,000 expressions & idioms Understand any expression you come across: from corporate jargon like 💬 touch base or ↩️ circle back to everyday expressions such as 🌊 out of the blue or 🦆 lame duck, as well as idioms like 🍲 spill the beans and 🐎 hold your horses.

40,000 images When you search for a concrete noun or object, images help you grasp the meaning at a glance. Try searching for 🧵 puppytooth, 🎠 merry-go-round, ⚜️ fleur-de-lys, or 💤 bunk bed.

Informal language & slang Everyday conversations are packed with informal expressions and slang. Meanings are clearly tagged, so you'll always know when a word is casual. Look up hangry (😋 hungry + 😡 angry), 😎 rizz, 🕹️ noob, or 🔑 low-key.

Abbreviations & acronyms Quickly decode modern abbreviations and acronyms. Go from IDK to OMG in seconds and stay up to date with popular abbreviations such as 🐐 GOAT, 📜 tl;dr, 👀 POV, or 🖥️ AFK.

Regional usage (US / UK) Reverso highlights regional differences between American and British English. You’ll never have to wonder where a word is commonly used: try lift vs. elevator, courgette vs. zucchini, or popular British slang like dodgy or banter. What’s more, when you search for 'color', you’ll immediately see its British counterpart, 'colour'.

Get more than a simple definition

Translations for each meaning View translations alongside each meaning to see how a word is translated in each context. Simply toggle translations ON and choose among 25+ languages. You can also display the translation of definitions or examples into your native language to deepen your understanding.

Synonyms & related words by meaning View synonyms and related words for each meaning, not just for the word as a whole. This helps you choose the most accurate word for your context. Click the

icon to discover related terms: analogies, antonyms, common collocates, words with same roots, umbrella terms… Try with happening or hunch.

Multiple examples for every meaning Each meaning comes with three real-life examples to show you how the word is used in different contexts. Click the

icon next to the first example to see two additional options and learn to use new vocabulary naturally.

Go from understanding to mastery

Save words for later review Click the

icon to save words you want to revisit. You can also save a specific meaning by clicking on the

icon next to it. For example, you might want to save the word “table” as a verb, which means “to postpone”.

Practice with personalized flashcards Reverso automatically transforms your searches and saved words into personalized flashcards and quizzes, featuring high-quality audio and usage examples. This helps you transform terms you only recognize into words you actually use confidently.

Learn with Netflix, YouTube, and your favorite texts With Reverso Chrome extension, transform movies, TV shows, articles, or song lyrics into an interactive lesson. Look up words and expressions in one click on any website and learn with your favorite content.

Definition of atomic number - Reverso English Dictionary

Noun

Expressions with atomic

Expressions with number

Terms related to atomic number

Terms with atomic number included in their meaning

View all translations of atomic number

Discover how Reverso redefines the dictionary

Go beyond “simple words”

Get more than a simple definition

Go from understanding to mastery