Last Updated：2025/11/19
The basic unit of length in the International System of Units (SI: Système International d'Unités), equal to the distance travelled by light in a vacuum in 1/299 792 458 seconds. The metre is equal to 39+⁴⁷⁄₁₂₇ (approximately 39.37) imperial inches.
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metre
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Source Word
metre
IPA(Pronunciation)
（ plural ）
