an abnormal state in which development has stopped prematurely発育が早い段階で止まっている異常な状態退行
an unhealthy and compulsive preoccupation with something or someoneある物や人に対する病的で強迫的な執着強迫観念
(histology) the preservation and hardening of a tissue sample to retain as nearly as possible the same relations they had in the living body生体にあったときになるべく近い関係を保つために、組織標本を硬化させて保持すること固定