gigantism

详细解释:n. 巨大, 巨体, 巨大发育, 巨大畸形, 庞大
【医】 巨大发育, 巨人症

英语解释：

名词 gigantism:

excessive size; usually caused by excessive secretion of growth hormone from the pituitary gland同义词：giantism, overgrowth