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Definitions

diameter

[dahy-am-i-ter] / daɪˈæm ɪ tər /
NOUN
measurement across object
Synonyms


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

With a steady hand, she manoeuvred a huge wind turbine section, five metres in diameter, across the yard.

From Barron's • Mar. 7, 2026

The prizes have a diameter of just over 3 inches and are less than half an inch thick.

From The Wall Street Journal • Feb. 10, 2026

They are considered harmless to humans and are predominantly found sitting in large webs often more than a metre in diameter.

From BBC • Feb. 10, 2026

Together, these gas flows stretch across a distance greater than 100 times the planet's diameter, or more than three times the distance between the planet and its star.

From Science Daily • Jan. 20, 2026

Protons and neutrons are about 10~12 centimeters in diameter.

From "Innumeracy: Mathematical Illiteracy and Its Consequences" by John Allen Paulos