(ˈ)bī|gwäˌnīd, -_nə̇d noun
( -s )
Etymology: International Scientific Vocabulary bi- (I) + guan- (from guanidine ) + -ide
: a strong amorphous base NH[C( = NH)NH 2 ] 2 some of whose derivatives (as aryl derivatives) find use as antimalarial drugs or as precipitants for dyes in color photography