millimetre

noun

🔊/ˈmɪlimiːtə(r)/

🔊/ˈmɪlimiːtər/

(US English millimeter)

(abbreviation mm)

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a unit for measuring length; a 1 000th of a metre毫米；千分之一米
- (informal) The bullet missed his head by a millimetre.子弹没打中他的头。
Topics Maths and measurementb1