1. A unit of measurement based on the metric system, which uses base units (meter, kilogram, second, etc.) and decimal multiples/submultiples
The meter is a metric unit of length.
O metro é uma unidade métrica de comprimento.
2. Any standardized unit of measurement in the International System of Units (SI)
Scientists use metric units for all laboratory measurements.
Os cientistas usam unidades métricas para todas as medições laboratoriais.