English Words: R
21,470 words · Page 403 of 430
A poorly characterized disorder, probably of X-linked recessive inheritance, with major manifestations including congenital ichthyosis, hypogonadism, small stature, mental retardation, and epilepsy.
An underwater vane used to steer a vessel. The rudder is controlled by means of a wheel, tiller or other apparatus (modern vessels can be controlled even with a joystick or an autopilot).
The degree of control that the rudder can exert over the yawing motion of an aircraft; related to rudder design and airspeed.
A type of control surface, usually found on flying wing aircraft, consisting of two pairs of panels (one mounted near each wingtip on the wing's trailing edge), with one lying on top of the other sandwich-style; to roll the aircraft, both panels on one wing deflect downwards (increasing the lift of that wing) and both panels on the othe wing deflect upwards (decreasing the lift of that wing), while, to yaw the aircraft, the panels on one wing split apart from each other (the upper panel deflects upwards, and the lower panel deflects downwards), increasing the drag on that wing.
Oxyura jamaicensis, a small stifftail duck, the male of which has a rust-coloured body.
An unexpected discovery of an undesirable fact, especially one shattering high hopes or signifying the end of a comfortable situation.
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 403. 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.