milliradian

[ mil-uh-rey-dee-uh n ]
/ ˈmɪl əˌreɪ di ən /

noun

one thousandth of a radian.

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Origin of milliradian

First recorded in 1950–55; milli- + radian
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020