( n. )
Any one of a series of nitro derivatives of phenol. They are yellow oily or crystalline substances and have well-defined acid properties, as picric acid.
( n. )
Any one of a series of nitro derivatives of phenol. They are yellow oily or crystalline substances and have well-defined acid properties, as picric acid.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012