CEFR B2
metrochrome
noun
Meaning
metrochrome means (historical) An instrument with a lantern for measuring colours, used in conjunction with a telescope to note the colours of stars. It can have more than one sense, so use the alternate meanings and examples to choose the meaning that matches your sentence.
Examples
- The article uses metrochrome to mean (historical) An instrument with a lantern for measuring colours, used in....
- The teacher asked students to find metrochrome in the reading.