Macrognathia refers to the condition of abnormally large jaws. It is also called as 'megagnathia'. Etiology. Heredity; Pituitary gigantism; Paget's disease of bone (osteitis ...
macrognathia /mac·ro·gna·thia/ (-nath´e-ah) enlargement of the jaw.macrognath´ic. mac·ro·gna·thi·a (m k r-n th-, m k r g-) n. Enlargement or elongation of the jaw.