Ecology. Adapted for living in large groups; relating to or associated with such adaptation.
Mid 19th century (in an earlier sense). Irregularly from ancient Greek ὄχλος crowd, mob, multitude + -otic.
英汉双解词典包含464360条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。