n.
Pronunciation: ə - ˌ m ē -n ō - ' p ī (- ə )r- ˌ ē n
Function: noun
Etymology: International Scientific Vocabulary, from amino + anti pyrine
Date: circa 1936
: a crystalline compound C 13 H 17 N 3 O formerly used to relieve pain and fever but now largely abandoned for this purpose because of the occurrence of fatal agranulocytosis as a side effect in some users