Skip to content A B C D E F G H I J K L M N O P Q R S T U V W X Y Z rhoticity The quality of being rhotic. Rhoton A surname. rhova A second-order measure of derivative price sensitivity, expressed as the rate of change of vega with respect to changes in the risk-free interest rate, or equivalently the rate of change of rho with respect to changes in the volatility of the underlying asset. RHU A village west of Helensburgh in Argyll and Bute council area, Scotland (OS grid ref NS2684). rhubarb Any plant of the genus Rheum, especially Rheum rhabarbarum, having large leaves and long green or reddish acidic leafstalks that are edible, in particular when cooked (although the leaves are mildly poisonous). rhubarbarin chrysophanic acid rhubarblike Resembling or characteristic of rhubarb. rhubarby Resembling or characteristic of rhubarb. Rhuddanian A subdivision of the Silurian period. Rhuddlan A town and community with a town council in Denbighshire, Wales (OS grid ref SJ0278). Rhudy A surname. Rhue A surname. Rhule A surname from German. rhumb A line which crosses successive meridians at a constant angle. rhumbatron A kind of resonator. rhupunt A type of Welsh verse composed of four four-syllable sections in which the first three sections rhyme with each other and the fourth section rhymes with the fourth section of the next verse. rhupus A rare condition characterized by overlapping features of both rheumatoid arthritis and systemic lupus erythematosus. rhusflavanone A particular biflavonoid found in Rhus species. rhusflavone A particular biflavonoid found in Rhus species. rhusma A mixture of caustic lime and orpiment, or tersulphide of arsenic, used in the depilation of hides. Rhyacian Of a geologic period within the Paleoproterozoic era from about 2300 to 2050 million years ago. rhyacichthyid Any fish in the family Rhyacichthyidae. rhyacolite A glassy feldspar found at Mount Somma in Italy. rhyacophilid Any caddis fly in the family Rhyacophilidae. rhyacotritonid Any salamander in the family Rhyacotritonidae. Rhydowen A small settlement in Llanboidy community, Carmarthenshire, Wales (OS grid ref SN1928). Rhydyfelin A large village in Pontypridd community, Rhondda Cynon Taf borough county borough, Wales (OS grid ref ST0988). Rhydymwyn A village in Cilcain community, Flintshire, Wales (OS grid ref SJ2066). rhykenologist A person who collects woodworking planes. rhykenology The hobby of collecting woodworking planes. Rhyl A coastal town and community in Denbighshire, Wales (OS grid ref SJ0181). Rhyll A town in Bass Coast Shire, Phillip Island, southern Victoria, Australia. rhymability The quality of being rhymable. rhymable For which a rhyme can be found. rhyme Rhyming verse (poetic form). rhymefest A situation involving a great deal of rhyming. rhymeless Without rhymes. rhymelessly In a rhymeless manner. rhymelessness The quality of being rhymeless. rhymelet A little rhyme. rhymelike Resembling or characteristic of rhyme. rhymemaker A composer of rhymes. rhymemaking The composition of rhymes. rhymemaster A good rhymer, a poet or musician skilled at rhymes. rhymeprose An early form of poetry, not strictly distinguished from prose writing, but having certain poetical features. rhymer A minstrel. rhymery The art or habit of making rhymes. rhymester A rhymer; a poetaster rhymewise In terms of rhyme. rhymey Characterised by rhyme. rhymic Of or pertaining to rhyme. rhymical Of or pertaining to rhyme. rhyming Rhyme. rhymingly In a way that rhymes. rhymist One who rhymes; an inferior poet. Rhymney A town and community in Caerphilly borough, South Wales (OS grid ref SO1107). rhynchitid Any weevil in the family Rhynchitidae, the attelabid subfamily Rhynchitinae in some classifications. rhynchobatid Any wedgefish in the family Rhynchobatidae, a synonym of the Rhinidae. rhynchobdellid Any of the leeches of the order Rhynchobdellida. rhynchocephalian Any of a group of reptiles of the order Rhynchocephalia; a tuatara. rhynchocinetid Any shrimp in the family Rhynchocinetidae. rhynchocoel A nemertean worm of the former phylum Rhynchocoela. rhynchocoelan Any member of the Rhynchocoela. rhynchocoelic Relating to a rhynchocoel (type of tubular cavity). rhynchodaeum A cavity in some gastropods that contains the proboscis. rhynchodipterid Any extinct lungfish in the family Rhynchodipteridae. rhynchokinesis The ability of some birds to flex the upper beak or rhinotheca. rhynchokinetic Relating to rhynchokinesis. rhyncholite A fossil cephalopod beak. rhynchonella Any member of the extinct genus †Rhynchonella of brachiopod, found in Silurian to Eocene strata worldwide. rhynchonellatan Any member of the Rhynchonellata class of brachiopods. rhynchonellate A brachiopod of the class Rhynchonellata rhynchonellid Any brachiopod of the order Rhynchonellida. rhynchonelliform Belonging or relating to the Rhynchonelliformea. rhynchophoran Belonging to the Rhynchophora. rhynchophorous Belonging to genus Rhynchophorus. rhynchophthirine Any insect of the Rhynchophorus genus. rhynchophylline An alkaloid present in Uncaria rhynchophylla rhynchopid Any skimmer in the family Rynchopidae. rhynchosaur Any of several diapsid reptiles, of order Rhynchosauria, from the Triassic period rhynchosaurian Synonym of rhynchosaur. rhynchosaurid Any extinct rhynchosaur in the family Rhynchosauridae. rhynchosporium Any of several fungi, of the genus Rhynchosporium, that are pathogenic to cereals. rhynchostome The opening of the rhynchodaeum (in some gastropods) through which the proboscis emerges rhynchotous Belonging to the Rhynchota. Rhyndaston A rural locality in Southern Midlands council area, Tasmania, Australia. rhyne A kind of Russian hemp. Rhyner A surname from German. rhynia Any plant of the genus Rhynia. rhyniaceous Of or relating to the Rhyniaceae. Rhynie A village in Aberdeenshire council area, Scotland. rhyniophyte An extinct early vascular plant, Rhyniopsida. rhyniopsid Any plant of the class †Rhyniopsida. Rhynsburger A surname. rhyodacite An extrusive volcanic rock intermediate in composition between dacite and rhyolite rhyodacitic Relating to a rhyodacite. rhyolite An igneous, volcanic (extrusive) rock, of felsic composition, with aphanitic to porphyritic texture. rhyolitic Pertaining to or composed of rhyolite, the lava form of granite. rhyparochromid Any seed bug in the family Rhyparochromidae. rhyparograph A painter of sordid or distasteful subjects. rhyparographer A person who paints or writes about distasteful or sordid subjects. rhyparographic Relating to rhyparography. rhyparographist One who produces works dealing with mean or sordid things; a creator of rhyparography. rhyparography The painting, or literary description, of mean or sordid things; especially still-life or genre painting. rhyphid Any gnat in the family Rhyphidae, a synonym for the Anisopodidae. rhypophagy The feeding on filth rhypophobia The fear of defecation. Rhys A male given name from Welsh. rhysimeter An instrument, similar to a pitot tube, for measuring the velocity of a fluid current, the speed of a ship, etc. rhysodid Any member of the family Rhysodidae of wrinkled bark beetles, sometimes Rhysodini in family Carabidae. rhysodine Any member of the subfamily Rhysodinae of carabid beetles. rhythm The variation of strong and weak elements (such as duration, accent) of sounds, notably in speech or music, over time; a beat or meter. rhythmal Rhythmic. rhythmed Having a (specified kind of) rhythm. rhythmer One who writes in rhythm, especially in poetic rhythm or meter. rhythmic Of or relating to rhythm. rhythmical rhythmic rhythmicality The quality of being rhythmical. rhythmically In a rhythmical manner. rhythmicalness The quality of being rhythmical. rhythmicity The quality or state of having a rhythm rhythmicize To make rhythmic. rhythmicon An early transposable keyboard instrument capable of playing notes in periodic rhythms proportional to the overtone series of a chosen fundamental pitch. rhythmics The study of rhythm. rhythming Writing rhythm or verse. rhythmist A musician who plays the rhythm. rhythmite Any of a rhythmic series of sedimentary beds; a varve rhythmizable Able to be rhythmized. rhythmization The process or the result of rhythmizing. rhythmize To put into a rhythm; to make rhythmic. rhythmless Without rhythm. rhythmlessly Without a rhythm. rhythmlessness Absence of rhythm. rhythmogenesis The genesis (and maintenance) of a rhythm, especially that of respiration rhythmogenetic Relating to rhythmogenesis. rhythmogenic Relating to rhythmogenesis rhythmogenicity The quality of being rhythmogenic. rhythmogram A graphical representation of the response to a continuous stimulus. rhythmographic Relating to rhythmography. rhythmography The visual transcription of an auditory rhythm rhythmological Relating to rhythmology. rhythmologist A practitioner of rhythmology. rhythmology The analysis and treatment of abnormal heart rhythms. rhythmometer An instrument for marking time in music, e.g. a metronome. rhythmometric Relating to rhythmometry rhythmometry The measurement of rhythms (typically biological or medical) rhythmopoeia The art of composing rhythmically. rhytid Any undesirable wrinkle in the skin. rhytide A wrinkle, typically a facial wrinkle secondary to muscular contraction patterns in the skin. rhytidectomy Plastic surgery to reduce the visible signs of aging in the face by removing wrinkles.