Exponent
Etymology
From Latin “exponere” (to set forth or expose), ex- (out) plus ponere (to place) — the exponent “sets out” how far a number is raised. The mathematical usage was established by 16th- and 17th-century algebraists including Michael Stifel and René Descartes.
noun · /EK-spoh-nuhnt/
The small raised number telling how many times a base is multiplied by itself, as the 2 in ten squared.
What it names
It is the machinery behind scientific notation and every claim of “squared” or “to the power of” growth.
Example
Writing 3,000,000 as 3 times 10 to the exponent 6 keeps huge numbers legible and comparable.
Related idea
The exponent drives exponential growth and defines a power law; changing it slightly — from an exponent of 2 to 3 — can turn a manageable increase into a runaway one.
noun · /EK-spoh-nuhnt/
A person who supports and promotes an idea, or who is a skilled practitioner of an art or activity.
What it names
an advocate or accomplished performer
Example
She is a leading exponent of the baroque cello.
Related idea
Both senses come from “setting forth” — the number set above, the person who sets forth a cause. A true exponent embodies arete, excellence in a craft.