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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 cost for treating oak wilt, or any tree disease that requires a fungicide injection, depends on the tree’s diameter at breast height, or DBH.

From The Wall Street Journal • Feb. 4, 2026

By analyzing its length and diameter, the researchers assessed whether the bones could withstand the forces produced during hopping.

From Science Daily • Jan. 23, 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

Among them were the length of his left foot, the width and length of his head, and the diameter of his right ear.

From "Killers of the Flower Moon" by David Grann