expansion

/ɪkˈspænʃən/

Say it: ik-SPAN-shun

1. noun The action of becoming larger or more extensive in size, volume, number, or scope.
The rapid expansion of the city led to traffic problems.
2. noun The process of a business, organization, or economy becoming larger and more successful.
The company is planning a major expansion into the European market next year.
3. noun A version of something that has been enlarged or supplemented with more detail.
His new book is an expansion of an essay he published a decade ago.
4. noun The increase in the volume of a substance as its temperature or pressure changes.
Engineers must account for the thermal expansion of metal when building bridges.

📖 Seen in the wild

The company's rapid expansion into new markets led to a significant increase in profits.
collected by @vocablast

✏️ expansion in a sentence

The 19th century was a period of westward expansion in the United States.
After a period of economic expansion, the country is now facing a recession.
We're hiring more staff to support the expansion of our services.
The audible pop was caused by the rapid expansion of the gas inside the container.
This new software is an expansion pack for the original game, adding new levels and characters.
Her role in the company grew with its global expansion.

🔁 Synonyms & antonyms

growth enlargement extension increase development augmentation proliferation

growth · often implies a more natural or organic increase.

enlargement · focuses specifically on an increase in physical size or dimensions.

extension · typically suggests making something longer in space or time.

increase · a more general term for becoming greater in quantity or degree.

Opposites: contraction, reduction, shrinkage, compression, decrease

🌱 Where it comes from

The word 'expansion' traces back to the Latin verb 'expandere', which means 'to spread out'. This was formed from 'ex-', meaning 'out', and 'pandere', meaning 'to spread' or 'to stretch'. The core idea of spreading something out has remained central to the word's meaning as it evolved through French into English.

🧩 How it's used

Common patterns:

economic expansionrapid expansionterritorial expansionexpansion plansbusiness expansionthermal expansion

While 'expansion' is a versatile word, be mindful of its distinction from 'extension'. 'Expansion' usually implies an increase in overall size, scope, or volume, often in multiple directions. 'Extension' typically refers to making something longer, either in physical length or in duration. For example, you would request an extension on a deadline, not an expansion.

Word family: expand, expansive, expansively, expansiveness

💬 Quick answers

What does expansion mean in simple terms?

It means the act of making something bigger or the process of it becoming bigger, whether in size, number, or importance.

What is the difference between expansion and growth?

Growth often implies a natural, organic increase, like a plant growing. Expansion can be more deliberate and strategic, like a company actively opening new stores.

What is the verb for expansion?

The verb is 'to expand'. For example, 'The universe continues to expand.'

Is expansion a formal word?

Expansion is a neutral word. It is perfectly suitable for formal contexts like business and academic writing, as well as for everyday conversation.

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