English Words: R
21,470 words · Page 4 of 430
A proton pump inhibitor (trademark AcipHex) that inhibits gastric acid secretion and is taken orally in the form of its sodium salt C₁₈H₂₀NaN₃O₃S especially to treat gastroesophageal reflux disease, duodenal ulcers, and disorders (such as Zollinger–Ellison syndrome) involving gastric acid hypersecretion.
A type of educational institution in the Soviet Union that prepared Soviet workers to enter institutions of higher education.
The cyclic behaviour of a two-level quantum system in the presence of an oscillatory driving field.
A problem concerning the response of an atom to an applied harmonic electric field, with an applied frequency very close to the atom's natural frequency. It provides a simple and generally solvable example of light–atom interactions.
A female given name from Arabic, meaning spring, meant to symbolize the beginning of life, hope and the advent of happiness after a dark winter. The name of the first female Sufi saint, Rabia El Basri.
An infectious disease caused by species of Lyssavirus that causes acute encephalitis in warm-blooded animals and people, characterised by abnormal behaviour such as biting, excitement, aggressiveness, and dementia, followed by paralysis and death.
A string-searching algorithm that uses hashing to find an exact match of a pattern string in a text.
A popular modern Armenian music style that shows Middle Eastern influences and is related to Russian blatnyak and Azerbaijani mugham. Most of the songs have a 6/8 rhythm.
One of Sennacherib's messengers to Hezekiah, quoted in 2 Kings 18:27–37 and Isaiah 36:12–20.
An omnivorous, nocturnal mammal native to the Americas, of the genus Procyon, typically with a mixture of gray, brown, and black fur, a mask-like marking around the eyes and a striped tail.
A canid of the genus Nyctereutes, native to East Asia and widely introduced elsewhere in other cool parts of Eurasia.
The state of the orbits of the eyes (especially the undereye region) having a bluish-purplish coloration.
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 4. 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.