1
Stage 1 of 3
aequus
Latin · ancient
"equal, even"
equal, even, giving rise to aequare (to make equal)
2
Stage 2 of 3
aequatio
Latin · ancient
"an equalizing, a making equal"
an equalizing, a making equal, from aequare
3
Stage 3 of 3
equation
English · 1400s
"a mathematical statement showing two expressions are equal"
settled as the English word for a mathematical statement showing two expressions are equal
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