プロジェリアMeanings1nounprogeriaA rare genetic disorder characterized by symptoms resembling premature aging. The Japanese term 早期老化症 is also used.See also: 早期老化症プロジェリアは非ひ常じょうにまれな遺い伝でん性せい疾しっ患かんです。Progeria is a very rare genetic disorder.