1. An essential attribute by which one species is distinguished from another of the same genus, and which, when added on to the generic name, defines the species, as the word "rational" added on to the word "animal" defines man from every other animal.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• differencial,
• differental,
• differentail,
• differente,
• difrerentia,
• diferentia,
• differntia,
• diffferentia,
• differentya,
• diferencia,
• diferentiaa,
• diferrentia,
• differansia,
• differensia,
• differenzia,
• differentzia,
• differintia,
• differrintia,
• difrentia,
• differeantia

• differentiable,
• deferential,
• differential,
• deferentially,
• different,
• differentiator,
• differing,
• differently,
• Di Bernardo,
• differentially,
• difference,
• Di Perna,
• differentiated,
• Di Franco,
• differentiate.

The adjective form of the word "differentia" is "differentiating".

The plural of the "differentia" can be the "differentiae".

The singular of the "differentia" can be the "differentia".