isopiesticEtymologyFrom iso- + an element derived from Ancient Greek πίεσις (píesis, “pressure”) (see πιέζω (piézō)).isopiestic means Having equal pressure; isobaric. Lexicurio rates it Sui generis — a strength score of 87 out of 100.adjHaving equal pressure; isobaric.nounAn isobar.