English Words: Q
2,880 words · Page 10 of 58
A contest involving four successive events, usually swimming, kayaking, cycling, and running.
A polynomial equation of the second degree; an equation that can be rearranged in standard form as ax²+bx+c=0, where x is an unknown value, a, b, and c are known numbers, and where a does not equal zero.
A number field that is an extension field of degree two over the rational numbers.
A number (real or complex) which is a solution to an equation of the form x²+Bx+C=0 for some integers B and C. For example 42, or 2+3i, or 1+√/2.
A type of average, calculated as the square root of the mean of the squares, i.e. Q=√x_1²+x_2²+...+x_n²/n.
The mathematical theorem which states that, for given odd prime numbers p and q, the question of whether p is a square modulo q is equivalent to the question of whether q is a square modulo p.
For a given positive integer n, any integer that is congruent to some square m² modulo n.
A tetragonal-ditetragonal dipyramidal mineral containing arsenic, cadmium, lead, silver, and sulfur.
A bone found in some reptiles, amphibians, and birds in front of the quadrate at the base of the temporal fossa.
A curve having ordinates which are a measure of the area (or quadrature) of another curve.
An Italian genre of painting that used architectural elements to create illusions of perspective.
Any of several roughly square or rectangular muscles, e.g. in the abdomen, thigh, and eye socket.
A number system with base twenty-four, using the digits 0–9 and A–N (or Greek α-ω without numerals).
A bet where the bettor must pick the winners of four nominated races at the same track.
A period of 4 years, particularly (historical) the sets of four years in the ancient Egyptian and Greek calendars.
Spelling & Dictionary Insight
The English alphabetical index for the letter Q contains 2,880 headwords drawn from our Wiktionary-derived dictionary table. At 50 entries per page the browse splits into 58 pages, and you are currently viewing page 10. Every row above is a dictionary-backed entry with a canonical slug, and each links through to a full definition page with pronunciation, senses, etymology, and related-word data where available.
On this page 50 of 50 entries carry a part-of-speech tag and 50 carry at least one stored definition. Coverage varies across letters because Wiktionary volunteers build entries at different speeds for different parts of the alphabet, letters with common starting sounds (S, C, T, P) usually have the densest coverage, while less frequent starters (X, Q, Z) tend to have shorter but more specialised lists. PlainSpell surfaces whatever data is present and links back to the source when a definition is not yet recorded.
For readers using this index as a spelling reference, the guarantee is that every form you see on the list is a documented English headword, not a guess, not a derived inflection lacking a lemma row. If a word you expected to find is absent from the "Q" list, it usually means the form exists only as an inflection of another lemma (e.g. a past participle stored under the infinitive) or the entry has not yet been imported from Wiktionary. Use the search bar or the misspelling lookup to resolve these cases.