The term 'prefix with meter' refers to a variety of different measuring instruments. The crossword solutions for this term include 'thermo' (6 letters), 'deci' (4 letters), 'alti' (4 letters), 'dia' (3 letters), 'baro' (4 letters), 'tacho' (5 letters), 'anemo' (5 letters), 'PERI' (4 letters), 'odo' (3 letters), 'penta' (5 letters), 'octa' (4 letters), 'centi' (5 letters), 'hexa' (4 letters), and 'pedo' (4 letters). These words all refer to different types of meters, such as thermometers, decimeters, altimeters, diameters, barometers, tachometers, anemometers, perimeters, odometers, pentameters, octameters, centimeters, hexameters, and pedometers.