exponent
UK[ɪkˈspəʊnənt]US[ɪkˈspoʊnənt]
n
A person who supports an idea, theory, or plan and tries to explain it and make it popular.
n
A symbol written above and to the right of a number or letter to show how many times that number or letter is to be multiplied by itself.
Morpheme Breakdown
ex
pon
ent
ex
out of, from
pon
to place, to put
ent
one who does (something)
Etymology
The word 'exponent' originates from the Latin verb 'exponere', which is a compound of 'ex-' ("out") and 'ponere' ("to place"). Its literal meaning was "to set forth, to explain". The present participle of this verb, 'exponens' (stem 'exponent-'), meant "one who sets forth or explains". This semantic core traveled into English, first describing a person who expounds or advocates for a doctrine. The mathematical sense, referring to a symbol "placed out" or set above a number to denote its power, developed later in the 16th century by analogy to the explanatory function of the person, as it "explains" how many times the base is used as a factor.
Analysis
Structure: ex + pon + ent
- ex: Latin origin, meaning "out of, from". A prefix indicating outward movement or position.
- pon: Latin origin, from the root of 'ponere', meaning "to place, to put".
- ent: Latin origin, suffix '-ent-', forming agent nouns from verbs, meaning "one who does (something)".
Examples
He was a leading exponent of free trade policies.
In the expression 5³, the number 3 is the exponent.
Her writing made her a famous exponent of modernist poetry.