ab initio

ˌæb ɪˈnɪʃiəʊ

Definition

Definition of ab initio - Reverso English Dictionary

Adverb

sciences

TECH.

calculated from basic laws without assumptions

TECH.

The molecule's structure was determined ab initio.

initially

first stage

Rare

from the start or beginning

Rare

He learned the skill ab initio.

initially

originally

primarily

legal

Rare

from the time a law or contract starts

Rare

The agreement was void ab initio.

initially

originally

Add a suggestion |

Feedback:

Expressions with ab

ab roller

small wheel with handles for core exercises

The ab roller helps improve core stability.

ab wheel

exercise equipment with a wheel and handles for core workouts

She uses the ab wheel for her daily core exercises.

ab ovo

adv.

starting from the very beginning of something

The story was told ab ovo, detailing every event.

ab irato

adv.

in a state of anger or rage

He resigned ab irato after the heated argument.

uno ab alto

adv.

from a singular, higher perspective

The decision was made uno ab alto.

Origin of ab initio

Latin, ab (from) + initio (beginning, from initium)

Examples of ab initio in a sentence

Ab initio calculations predicted the compound's properties.
The project was planned ab initio to ensure success.
The contract was void ab initio due to a legal error.
The contract was considered null ab initio.
The clause was invalid ab initio due to a legal error.

View all translations of ab initio

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

French:ab initio, dès le départ, ...
German:ab initio, von Anfang an, ...
Italian:ab initio, da zero, ...
Spanish:ab initio, desde el principio, ...
Portuguese:ab initio, do zero, ...
Chinese:从头开始, 从头, ...
Japanese:アブイニシオで, 最初から, ...
Arabic:مِنَ الْبِدَايَة, مِنَ الْأَصْل, ...
Hebrew:מֵהַתְחָלָה, מֵהַהַתְחָלָה, ...
Russian:с нуля, с самого начала, ...
Ukrainian:з нуля, з самого початку, ...
Hindi:मूल से, शुरुआत से, ...
Bengali:মৌলিকভাবে, শুরু থেকে, ...
Catalan:ab initio, des del principi, ...
Czech:ab initio, od začátku, ...
Danish:ab initio, fra starten, ...
Dutch:vanaf het begin, van meet af aan, ...
Greek:από την αρχή, εξ αρχής, ...
Hungarian:ab initio, kezdettől fogva, ...
Khmer:ដោយគណនាចេញពីច្បាប់មូលដ្ឋាន ដោយមិនសន្មតជាមុន, តាំងពីដំបូង, ...
Korean:처음부터, 처음에, ...
Persian:از ابتدا, از آغاز, ...
Polish:ab initio, od podstaw, ...
Portuguese (BR):ab initio, ...
Romanian:de la zero, ab initio, ...
Swedish:från grunden, från början, ...
Thai:จากกฎพื้นฐาน, ตั้งแต่เริ่มต้น, ...
Turkish:temel ilkelerden, en baştan, ...
Vietnamese:từ đầu, ngay từ đầu, ...

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 ab initio - Reverso English Dictionary

Adverb

Expressions with ab

Origin of ab initio

Terms related to ab initio

Examples of ab initio in a sentence

View all translations of ab initio

Discover how Reverso redefines the dictionary

Go beyond “simple words”

Get more than a simple definition

Go from understanding to mastery