noun
Usage: often capitalized both Os & N
Etymology: ortho (I)
: an organic pigment — see dye table I (under Pigment Orange 2 )
noun
Usage: often capitalized both Os & N
Etymology: ortho (I)
: an organic pigment — see dye table I (under Pigment Orange 2 )
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012