dialect
The most basic reason why dialects should be preserved is that language helps to retain a culture.
dimension
people who understand economics can differentiate from "economic models" and "economics", as they barely reside in the same dimension.
thermometer
A thermometer attached to one of the outbuildings records the temperature at 55 degrees.
diameter
The probe in question is about two metres long, 19cm in diameter and weighs 37kg.