Spelling.School · How to spell

How to spell extension

Extension is spelled E-X-T-E-N-S-I-O-N.

What it means: An extra part added to make something bigger.

In a sentence: We added an extension to the treehouse to make it bigger. ▶

The part people get wrong

Watch for an unstressed vowel that is hard to hear.

Same family: extended, extending, extensive, extensionally, extent. If you can spell one, the shared part carries to the others.

Where it comes from: Extension comes from Latin "extensio," from "extendere," meaning "to stretch out." In modern logic and linguistics, its technical sense—"the set of things a word refers to"—is like the word stretching out to cover all the items it names.

Try spelling it

You will hear the word and a sentence. Type it and press Enter. Then four more words from the same level, so you know where you stand.

Words like this

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