Real Dictionary

differential
a factor that differentiates between two comparable things [...]
a unit of heredity composed of DNA occupying a fixed position on a chromosome (some viral genes are composed of RNA). A gene may determine a characteristic of an individual by specifying a polypeptide chain that forms a protein or part of a protein ( stru
distinction or emphasis of difference by comparison of opposite or dissimilar things, qualities, etc (esp in the phrases by contrast, in contrast to or with) [...]
something that is produced by a cause or agent; result [...]
the act of responding; reply or reaction [...]
the act or an instance of interfering [...]
the act or an instance of transforming ideas into words [...]
the act or process of regulating [...]
the division of a physical or abstract whole into its constituent parts to examine or determine their relationship or value [...]
countable noun: In mathematics and economics, a differential is a difference between two values in a scale.