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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.

Saturn's magnetosphere is enormous, extending to more than 10 times the planet's diameter.

From Science Daily • Apr. 3, 2026

Handling both the charge and recharge cycles is a reactor about 15 inches in diameter and 8 feet tall that can generate around 100 kilowatts of heat.

From The Wall Street Journal • Mar. 27, 2026

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

From Barron's • Mar. 7, 2026

Measuring roughly 55 feet long and 18 feet wide, the float featured a dense seascape of corals, fish and oversize sea stars, some spanning 4 feet in diameter.

From Los Angeles Times • Jan. 3, 2026

A pale yellow cylinder, thirty yards in diameter, is partially buried in a huge pit.

From "Spooked!" by Gail Jarrow