English Words: R
21,470 words · Page 16 of 430
The detection of underground electric cables (via the radio waves produced by alternating current)
A hand-held device that is used to detect underground cables or pipes, by means of radiodetection
Determination of the position, velocity, or other characteristics of an object by means of radio waves
The practical use of electromagnetic radiation, including radiocommunication, radionavigation, telemechanics, radar, sonar, etc.
A radiotherapy in which radioactive nanoparticles are injected into an artery and travel to an organ (typically the liver) where they settle
A form of internal radiotherapy in which small radioactive particles are surgically implanted
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 16. 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.