(mathematics) Of a polynomial expression, involving only the zeroth, second, and fourth powers of a variable, as x⁴ + 3x² + 2. Sometimes extended to any expression involving the biquadrate or fourth power (but no higher powers), as x⁴ − 4x³ + 3x² − x + 1.
noun
(mathematics) A biquadratic equation.
equiradical
equiradical
adj
(mathematics) Of surds: arising from the extraction of the same nth root.
preacquired
preacquired
adj
Acquired beforehand.
verb
simple past tense and past participle of preacquire
preadequacy
quadratical
quadratical
adj
(rare) quadratic
quadribasic
quadribasic
adj
(chemistry) tetrabasic
quadrichord
quadrichord
noun
(obsolete, music) tetrachord
quadricycle
quadricycle
noun
A four-wheeled motorcycle, often resembling a small car (microcar).
A four-wheeled pedal cycle.
quadrifocal
quadrifocal
adj
(optics) Of or pertaining to lenses that have four different powers per eye.
quarterdeck
quarterdeck
noun
(nautical) The aft part of the upper deck of a ship; normally reserved for officers
relacquered
relacquered
verb
simple past tense and past participle of relacquer