English Words: R
21,470 words · Page 285 of 430
A dimensionless parameter that determines the behavior of viscous flow patterns. In pipe flow a value less than about 2,000 (known as the critical Reynolds number) produces laminar flow, one above about 3,000 produces turbulent flow (intermediate values produce unpredictable behavior).
A mathematical operator given by averaging something over a group action, satisfying a set of properties called Reynolds rules, and having applications in fluid dynamics and invariant theory.
A rare secondary laminopathy, consisting of the combination of primary biliary cirrhosis and progressive systemic sclerosis.
A collection of signs and symptoms consistent with obstructive ascending cholangitis, a serious infection of the biliary tract. It combines Charcot's cholangitis triad (right upper quadrant pain, jaundice, and fever) with shock (low blood pressure, tachycardia) and an altered mental state.
Of or pertaining to Joshua Reynolds (1723–1792), influential 18th-century English painter, specialising in portraits.
A male given name from Iranian Persian [in turn from Classical Persian, in turn from Arabic], variant of Riza.
Of or relating to Trent Reznor (born 1965), American musician known for the industrial rock project Nine Inch Nails.
to change the zoning assigned to a piece of property by the planning and zoning commission of a government that determines proper and legal use for land.
Spelling & Dictionary Insight
The English alphabetical index for the letter R contains 21,470 headwords drawn from our Wiktionary-derived dictionary table. At 50 entries per page the browse splits into 430 pages, and you are currently viewing page 285. 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 "R" 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.