English Words: R
21,470 words · Page 253 of 430
A fictional setting in which a new storyline explains or changes a previous event or attaches a new significance to it.
A pattern-matching algorithm for implementing production rule systems, used to determine which of the system's rules should fire based on its data store.
A complex of blood vessels found in some vertebrates that preserves a gradient of a certain solute or particle, originally specifically the network of arterioles at the base of the brain in some ungulates and other mammals.
A hilar testicular network that collects produced sperm from the seminiferous tubules, and connects with the efferent ducts.
A shrub with white flowers, possibly Retama raetam; the juniper of the (King James Version) Old Testament.
A hydrocarbon, polymeric with benzene, that is extracted from pine tar and also found in certain fossil resins.
Any of several species of bryozoans of the genus Reteporella (syn. Retepora) or the family Reteporidae, that form delicate calcareous corals, usually composed of thin fenestrated fronds.
The restructuring of a place or territory that has experienced deterritorialization.
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 253. 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.