n.
Pronunciation: ˌ r ā -d ē - ō -i- ' kä-l ə -j ē
Function: noun
Date: 1956
: the study of the effects of radiation and radioactive substances on ecological communities
n.
Pronunciation: ˌ r ā -d ē - ō -i- ' kä-l ə -j ē
Function: noun
Date: 1956
: the study of the effects of radiation and radioactive substances on ecological communities
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012