English Words: R
21,470 words · Page 24 of 430
The tracking of the movements of animals by means of an attached radio transmitter.
A form of radiotherapy in which a radioisotope is delivered via an oncolytic virus
A plant of the Brassicaceae family, Raphanus sativus or Raphanus raphanistrum subsp. sativus, having an edible root.
The daikon, particularly when its large roots are left in a field through the winter to reduce soil compaction, rather than harvested for consumption.
The 17th-century pair of French-Canadian explorers Pierre-Esprit Radisson and Médard Chouart des Groseilliers working for the Hudson's Bay Company of English Royal Charter
The chemical element (symbol Ra) with an atomic number of 88. It is a soft, shiny and silvery radioactive alkaline earth metal.
Given a body B, the distance from a given axis of rotation at which a point mass of the same mass as B would have the same moment of inertia about said axis.
The number which, added to the given n-digit number in radix r, results in rⁿ. In binary (r=2), this is the two's complement.
The character used to separate the integer and fractional part of a number in a digital representation of a number, regardless of the base used.
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 24. 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.