ˌakrəˈdinēəm noun
also ac·ri·do·ni·um -dōn-
( -s )
Etymology: acridinium, New Latin, from International Scientific Vocabulary acridine + New Latin -ium; acridonium, New Latin, from International Scientific Vocabulary acridone + New Latin -ium
: a univalent radical C 13 H 10 N analogous to ammonium derived from acridine