( n. )
The smallest part of any substance which possesses the characteristic properties and qualities of that substance, and which can exist alone in a free state.
( n. )
The smallest part of any substance which possesses the characteristic properties and qualities of that substance, and which can exist alone in a free state.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012