micrometer B2 Topic:Mathematics & Measurement US /maɪˈkɹɑmɪtəɹ/ UK /maɪˈkɹɒmɪtə/ See IPA manual Freq #133743 Meanings 1 noun A tool for measuring very small distances, such as thickness or diameter, with great precision. The engineer used a micrometer to check the thickness of the metal sheet. 2 noun A unit of length equal to one millionth of a metre. A human hair is about seventy micrometers wide. Thesaurus Synonyms 1 noun · a tool for measuring very... micrometer calipermicrometer gauge 2 noun · a unit of length equal to... micron Word family Forms micrometers Common collocations micrometer gauge Noun + noun Etymology AI details From micro- (“one millionth”) + meter. Topics Mathematics & Measurement External links Cambridge Dictionary Wiktionary Google Images # micrometer **Type:** Word **Level:** B2 **Part of speech:** noun **IPA (US):** /maɪˈkɹɑmɪtəɹ/ **IPA (UK):** /maɪˈkɹɒmɪtə/ **Frequency rank:** 133743 ## Meanings 1. A tool for measuring very small distances, such as thickness or diameter, with great precision. 2. A unit of length equal to one millionth of a metre. ## Examples - The engineer used a micrometer to check the thickness of the metal sheet. - A human hair is about seventy micrometers wide. ## Etymology From micro- (“one millionth”) + meter. ## AI Etymology Micrometer comes from micro- (“one millionth”) + meter. In present-day English its meanings include a tool for measuring very small distances, such as thickness or diameter, with great precision and a unit of length equal to one millionth of a metre. ## Topics - Mathematics & Measurement markdown