mesic \ˈme]zik, ˈmē], ]sik\adjective Etymology: in sense 1, from meson + -ic; in senses 2 & 3, from mes- + -ic 1.: mesonic < the radii of the mesic orbits — Lawrence Wilets > 2.of a habitat: having or characterized by a moderate amount of moisture : neither hydric nor xeric 3.of a plant or flora: mesophytic • mesi·cal·ly\]zə̇k(ə)lē, ]sə̇-\adverb