Origin: Latin suffix -al
Differential has 7 different meanings across 2 categories:
the result of mathematical differentiation; the instantaneous change of one quantity relative to another; df(x)/dx
"The differential equation uses the differential, or instantaneous rate of change, to model how the population grows over time."
a quality that differentiates between similar things
"The differential in their marketing strategies was the key factor that allowed one company to outperform its rival."
a bevel gear that permits rotation of two shafts at different speeds; used on the rear axle of automobiles to allow wheels to rotate at different speeds on curves
"The differential allows the rear wheels of a car to spin at different rates when turning a corner."
the differential gear in an automobile etc
"The mechanic spent hours repairing the broken differential to restore power to both rear wheels."
In plain English: A differential is something that shows how two things are different from each other.
"The differential between their test scores was surprisingly small despite studying for different amounts of time."
of, or relating to a difference
"The differential diagnosis focused on identifying the precise differences between similar symptoms."
In plain English: Something that is differential stands out as different from everything else around it.
"The differential equation has two different solutions depending on the initial conditions."
Usage: Use this adjective when describing something that shows variation between two things, such as a differential diagnosis distinguishing diseases. Avoid confusing it with "different," which simply means not alike without implying a measurable distinction.
The word differential combines the root different, meaning distinct or unlike, with the suffix -ial to form an adjective describing something that shows differences. It entered English as a technical term in mathematics and logic to denote a specific type of calculation involving rates of change or distinctions between values.