Where does “square footage” come from?

square footage (English) comes from English age, from Middle English age, from Old French aage, from Vulgar Latin aetaticum, from Latin aetās, from Latin aevitās, from Proto-Italic aiwotāts, from Proto-Indo-European h₂eyu- — vital force, life, age, eternity; day, morning.

square footage (English): Area the measure of an extent of surface, in square feet

Definitions

  1. Area the measure of an extent of surface, in square feet

Ancestry of “square footage”, step by step

square footage traces back through two separate lines of ancestry.

via English age

StepLanguageWordMeaning
1EnglishageThe whole duration of a being, whether animal,...
2Middle EnglishageThe age of someone or rarely something; how old someone is
3Old Frenchaageage
4Vulgar Latinaetaticumage
5Latinaetāsthe period of a life: lifetime, lifespan
6Latinaevitās
7Proto-Italicaiwotātsage
8Proto-Indo-Europeanh₂eyu-vitality; eternal; vital force, life, long life,...
9Proto-Indo-Europeanh₂ey-vital force, life, age, eternity; day, morning

via English square foot

StepLanguageWordMeaning
1Englishsquare footA unit of area equal to the area of a square...
Every word from Proto-Indo-European h₂ey-Every word from Proto-Indo-European h₂eyu-Every word from Proto-Italic aiwotāts
square footage — Etymology, Origin & Word History | Etymology Explorer