How Do You Spell← Check another word

How do you spell Diameter?

Correct spelling

diameter

Remember: DIA-METER measures through - one 'm', ends in -ter like thermometer

USUKCAAUNZ
diameterdiameterdiameterdiameterdiameter

Why is diameter spelled this way?

From Greek diametros, measuring through. DIA (through) + METRON (measure). The diameter measures through the center — the longest straight line a circle can contain.

Common misspellings of diameter

diamaterdiammeterdiametre

Example

The telescope's lens has a diameter of 8 inches.

Frequently asked questions

How do you spell diameter?+
The correct spelling is "diameter". Remember: DIA-METER measures through - one 'm', ends in -ter like thermometer
Is it diamater or diameter?+
The correct spelling is "diameter", not "diamater".
Does the spelling differ by country?+
Yes. In US English it's "diameter", in UK English it's "diameter", and Canadian, Australian, and New Zealand English follow the same spelling.

Other commonly misspelled words

epidemic epinephrine epiphany epitome

More spelling guides

exodus exonerate expansion expectation

Never misspell a word again. Get weekly spelling tips and tricky word pairs in your inbox.

Looking up financial terms? MoneyTerms.app → — plain-English definitions for every money term you'll encounter.