Quadratic Meaning
/kwɒdˈɹætɪk/Definition, CEFR level B2, pronunciation, examples, and quiz.
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Definition
adjSquare-shaped.
adjOf a polynomial, equation or function, second-degree: involving the second power (square) of a variable but no higher powers, as ax²+bx+c.
Sentence Examples
A quadratic function cannot be used here.
Quadratic equations have 2 roots.
There is a straightforward formula for solving a quadratic equation.
CEFR Practice Quiz
The equation x squared minus five x plus six equals zero is a ____ equation solved by factoring.
CEFR Practice Quiz (Alternate)
The student solved the ____ equation by completing the square and found two real solutions.
Word Origin & History
From French quadratique (1765), from Latin quadrātus + -ique (English -ic), form of quadrō (“to make square”), from quādrus (“square”), ultimately from Proto-Indo-European *kʷetwóres (“four”), whence also Latin quartus (“fourth”).
Literary Quotations & Historical Citations
"A linear or even a quadratic relation between the overall gain in efficiency η and the modularity Q would have been easily explained through S1 Fig, which shows a quadratic (inverse) relation between interedges fraction and modularity."
— 2015 November 17, “Fast Fragmentation of Networks Using Module-Based Attacks”, in PLOS ONE, →DOI:
"If the binomial roots of a series of quadratics be squaredly squared, and those results be constant portions of the cube of the resolvend, and the dioristic limit; […]"
— 1809, Charles Hutton, The Philosophical Transactions of the Royal Society of London from Their Commencement in 1665 to the Year 1800, volume 3, page 41:
Explore More B2 Vocabulary Words
CEFR Practice Quiz
The equation x squared minus five x plus six equals zero is a ____ equation solved by factoring.
CEFR Practice Quiz (Alternate)
The student solved the ____ equation by completing the square and found two real solutions.