Definisi dalam bahasa Inggris Appleton layer /'/&/p/@/lt/@/n_'l/eI//@/r / noun (n) the highest region of the ionosphere (from 90 to 600 miles up) which contains the highest concentration of free electrons and is most useful for long-range radio transmission (noun.location) Sinonim: f layer, f region Sumber: wordnet30 Lihat arti Appleton layer dalam bahasa Indonesia