Spelling.School · How to spell

How to spell expansion

hear itex·pan·sion/ɪk'spænʃən/nounSilent and tricky

What it means: The act of increasing in size.

In a sentence: The balloon's expansion made it bigger and rounder.

The part people get wrong

Often misspelled as expantion or expension.

Same family: expands, expanded, expanding, expansive, expansionary. If you can spell one, the shared part carries to the others.

Where it comes from: “Expansion” comes from the Latin verb *expandere*, meaning “to spread out.” The same root also appears in words like “expanse” and “expansive,” which suggest something wide, open, or spreading.

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