1. A unit of measurement that is part of the International System of Units (Système International d'Unités), the modern standardized metric system used internationally for scientific and commercial purposes
The meter is an SI unit of length.
O metro é uma unidade do SI de comprimento.
2. Any of the seven base units or derived units in the SI system, including meter, kilogram, second, ampere, kelvin, mole, and candela
Temperature is measured in SI units using the kelvin.
A temperatura é medida em unidades do SI usando o kelvin.