Definitions for "differentia"
The formal or distinguishing part of the essence of a species, by which it is distinguished from other members of its genus; the characteristic attribute of a species; specific difference; as, a proper definition must have both genus and differentia.
the set of characteristics distinguishing an entity from related entities.
A universal idea or predicable which expresses a part of the essence of its subject, that part which distinguishes one species from another under the same genus.
Keywords:  eureka, episode, seven, series, anime
"Differentia" is the 23nd episode of the anime series Eureka Seven.