noun one of the natural groups, more important than an order, into which some classes are divided; as, the angiospermous subclass of exogens.
SUBCLASS
Meaning of SUBCLASS in English
Webster English vocab. Английский словарь Webster. 2012
noun one of the natural groups, more important than an order, into which some classes are divided; as, the angiospermous subclass of exogens.
Webster English vocab. Английский словарь Webster. 2012