English
exponential
From exponent + -ial.
A compound of exponent + -ial
Proto-Indo-European *tḱey- ‘to build, cultivate’
…
Latin *sinō ‘to put in place’
Latin pōnō ‘to lay, place, put’
Latin expōnō ‘to expose’
Latin expōnēns ‘exposing’
English exponent
Today it means
adj Expressed in terms of an exponent (power of a base), the base often being 10 or e.
Language periods are conventional ranges, not dates for this word.
Etymograph / exponential