Measurement:
* Metre/Meter: The basic unit of length in the metric system.
* Metric: Relating to the metric system.
* Metrical: Relating to or written in meter (a rhythmic pattern in poetry).
* Geometrical: Relating to geometry, the study of shapes and their properties.
* Perimeter: The distance around a shape.
* Symmetry: The state of having two or more parts that are identical in form.
Other words with "metri":
* Thermometer: An instrument for measuring temperature.
* Barometer: An instrument for measuring atmospheric pressure.
* Chronometer: A highly accurate timepiece.
* Odometer: An instrument for measuring distance travelled.
* Sphygmomanometer: An instrument for measuring blood pressure.
* Audiometer: An instrument for measuring hearing ability.
* Biometry: The study of biological measurements.
These are just a few examples. The root "metri" is quite versatile and appears in many different fields.