English
quadratic
Quadratic comes from Latin quadrātus ‘square, squared, having been made square, made…’, from quattuor ‘four’, and ultimately from Proto-Indo-European *kʷetwṓr.
- Proto-Indo-Europeanc. 4500–2500 BCE*kʷetwṓrreconstructed
- Proto-Italicc. 1500–700 BCE*kʷettwōr‘four’reconstructed
- Latinc. 75 BCE–200 CEquattuor‘four’
- Latin, derivedc. 75 BCE–200 CEquadrus‘square’
- Latin, derivedc. 75 BCE–200 CEquadrō‘make square’
- Latin, derivedc. 75 BCE–200 CEquadrātus‘square, squared, having been made square, made into a square shape’
- Frenchc. 1600–presentquadratique
- Englishearliest quotation 1809quadratic
attested reconstructed ? uncertain or disputed deepest recorded ancestor
Lineage
- Proto-Indo-Europeanc. 4500–2500 BCE*kʷetwṓrreconstructed
- Proto-Italicc. 1500–700 BCE*kʷettwōr‘four’reconstructed
- Latinc. 75 BCE–200 CEquattuor‘four’
- Latin, derivedc. 75 BCE–200 CEquadrus‘square’
- Latin, derivedc. 75 BCE–200 CEquadrō‘make square’
- Latin, derivedc. 75 BCE–200 CEquadrātus‘square, squared, having been made square, made into a square shape’
- Frenchc. 1600–presentquadratique
- Englishearliest quotation 1809quadratic
Earliest quotation: 1809, Charles Hutton, The Royal Society of London for Improving Natural Knowledge: “If the binomial roots of a series of quadratics…”
Linked words
through Proto-Indo-European *kʷetwṓr
through Latin quattuor ‘four’
cater, cadre, quadruple, quatre, cuatro, quatrain, 27 more
through Latin quadrus ‘square’
through Latin quadrō ‘make square’
Today it means
adj Square-shaped.
Language periods are conventional ranges, not dates for this word.
Etymograph / Proto-Indo-European *kʷetwṓr / quadratic