superclass

[soo-per-klas, -klahs] /ˈsu pərˌklæs, -ˌklɑs/
noun, Biology
1.
a category of related classes within a phylum or subphylum.
2.
a subphylum.
Origin
1890-95; super- + class
British Dictionary definitions for superclass

superclass

/ˈsuːpəˌklɑːs/
noun
1.
a taxonomic group that is a subdivision of a subphylum
superclass in Medicine

superclass su·per·class (sōō'pər-klās')
n.
A taxonomic category ranking below a phylum and above a class.

superclass in Science
superclass
  (s'pər-klās')   
A taxonomic category of related organisms ranking below a phylum and containing one or more classes.
superclass in Technology


base class