Pronunciation: ˌ ē -k ō - ˌ fi-z ē - ' ä-l ə -j ē , ˌ e-k ō -
Function: noun
Date: 1962
: the science of the interrelationships between the physiology of organisms and their environment
– eco · phys · i · o · log · i · cal \ -z ē - ə - ' lä-ji-k ə l \ adjective