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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 device measures approximately 10 cm in diameter and 30 cm long and has a red anodised finish.

From BBC • Feb. 6, 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

After 24 hours of exposure, the outer diameter of the MicroShunt increased to 1.44 times its original size.

From Science Daily • Jan. 16, 2026

From the known size of the piece of gold used, and the diameter and length of the final wire, the skin of gold around the silver proved to be just 1/134,500th of an inch thick.

From "The Scientists" by John Gribbin