SI unit

ˌɛsˈaɪ ˈjuːnɪt

Definition

Definition of SI unit - Reverso English Dictionary

Noun

measurement system

TECH.

standard measure in the International System of Units

TECH.

The meter is an SI unit for length..
The kilogram is an SI unit for mass.
Scientists use the SI unit for consistency.

Add a suggestion |

Feedback:

Expressions with SI

SI joint

abbr.

joint connecting spine and pelvis

The doctor checked my SI joint for pain.

Expressions with unit

crack unit

elite group known for exceptional performance

The crack unit was deployed for the critical operation.

hurting unit

person in pain or distress

After the accident, he was a real hurting unit.

family unit

parents and children living together

The family unit moved to a new neighborhood.

garbage disposal unit

device under a sink grinding food waste

The garbage disposal unit broke down yesterday.

kitchen unit

piece of furniture or equipment in a kitchen

We installed a new kitchen unit last weekend.

police unit

group of police officers working together

The police unit responded quickly to the emergency call.

shower unit

complete shower setup, including cubicle and hardware

We replaced the old tub with a new shower unit last weekend.

unit manager

person responsible for running one specific part of an organization

The unit manager organized staff schedules for the entire department.

unit of measurement

standard quantity used to measure something

A meter is a unit of measurement for length.

unit price

price shown as cost per unit

The unit price on the shelf was $3 per dozen.

Terms with SI unit 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.

metre

measurement

basic unit of length in SI system

gray

science

the SI unit of absorbed radiation dose

cubic millimetre

measurement

SI unit of volume equal to a cube with 1mm sides

coulomb

electricity

SI unit of electric charge, 1 ampere per second

kilogram

measurement

unit of mass, base unit in SI, equals one thousand grams

metre per second

measurement

SI unit for measuring speed or velocity

nanosecond

metrology

SI unit of time equal to 10⁻⁹ seconds

ohm

electricity

unit of electrical resistance in SI system

View all translations of SI unit

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

French:unité SI, ...
German:SI-Einheit, ...
Italian:unità di misura SI, ...
Spanish:unidad del SI, ...
Portuguese:unidade SI, ...
Chinese:国际单位, ...
Japanese:SI単位, ...
Arabic:وحدة النظام الدولي, ...
Hebrew:יְחִידַת סִי, ...
Russian:единица СИ, ...
Ukrainian:одиниця СІ, ...
Hindi:एसआई इकाई, ...
Bengali:এসআই ইউনিট, ...
Catalan:unitat SI, ...
Czech:jednotka SI, ...
Danish:SI-enhed, ...
Dutch:SI-eenheid, ...
Greek:μονάδα SI, ...
Hungarian:SI-egység, ...
Khmer:ឯកតាអេសអាយ, ...
Korean:SI 단위, ...
Persian:واحد SI, ...
Polish:jednostka SI, ...
Portuguese (BR):unidade SI, ...
Romanian:unitate SI, ...
Swedish:SI-enhet, ...
Thai:หน่วยเอสไอ, ...
Turkish:SI birimi, ...
Vietnamese:đơn vị SI, ...

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 SI unit - Reverso English Dictionary

Noun

Expressions with SI

Expressions with unit

Terms related to SI unit

Terms with SI unit included in their meaning

View all translations of SI unit

Discover how Reverso redefines the dictionary

Go beyond “simple words”

Get more than a simple definition

Go from understanding to mastery