noun
: a hornwort ( Ceratophyllum demersum ) found as a submerged aquatic plant throughout No. America and grown in aquariums for its feathery foliage and as an aerator
noun
: a hornwort ( Ceratophyllum demersum ) found as a submerged aquatic plant throughout No. America and grown in aquariums for its feathery foliage and as an aerator
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012