Metr/Meter (measure)
Metr, meter
Greek metron: measure.
The electricity meter counts how much power we use.
Diameter
A straight line across a circle, through its centre.
The diameter of the cricket ball is about seven centimetres.
Symmetry
When two halves match exactly, like a mirror image.
The rangoli design had perfect symmetry.
Remember: Metr = measure: perimeter, thermometer. Stress before -meter: dy-AM-i-ter, puh-RIM-i-ter. British spelling: a metre of cloth, but a water meter.