幼よう生せい器き官かんようせいきかんMeanings1nounlarval organTechnical term in biology for an organ present in the larval stage of an organism.昆こん虫ちゅうの幼よう生せい器き官かんは、変へん態たいの過か程ていで消しょう失しつすることが多おおい。Larval organs of insects often disappear during metamorphosis.