Word origins

• retinaliteA translucent variety of serpentine of a honey-yellow to greenish-yellow colour, with a waxy resinous lustre.
• retinasphaltRetinite.
• retinophoraOne of a group of two to four united cells which occupy the axial part of the ocelli, or ommatidia, of the eyes of certain invertebrates, and contain the terminal nerve fibrils.
• rhabdiferousBeing a type of sponge cell with many rodlike inclusions and secreting mucopolysaccharide.
• rhabdo-rod, rod-like
• rhabdusA simple, straight spicule.
• RhadamanthusA strict and just judge.
• rhagadeA fissure, crack, or linear scar in the skin, especially at the angles of the mouth and nose, often appearing as a result of bacterial infection or skin lesions.
• rhagonA form of sponge with clustered spherical flagellated endodermal chambers.
• rhamphoidOf a cusp: defined by the equation (y-x²)²=x⁵, which is parametrized by (t²,t⁴+t⁵); having two branches with concavity in the same direction.
• rhamphothecaA thin horny sheath of keratin on the outer surface of a bird's beak
• rhapsodeOne who performs the poetry of a poet for an audience; not necessarily a writer of poetry.
• rhapsodomanticOf or pertaining to rhapsodomancy.
• rhapsoidosA rhapsode.
• rhasonThe clerical garb worn in the Greek and Russian Orthodox Churches.
• rhathymiaA carefree and extroverted personality factor.
• rhegmaA rupture or fracture.
• rhematicThe provision of new information regarding the current theme.
• rhemeThe part of a sentence that provides new information regarding the current theme.
• Rhenethe paramour of King Oïleus of Locris and the mother of either or neither of his sons Medon and Ajax.
• rheo-flow, current
• rhesisA passage of text in a play.
• rheticOf or pertaining to a rheme.
• rhexisThe rupture of an organ.
• rhexistasyA period of intense erosion due to the absence of a cover of vegetation.
• rhigoleneA mixture of volatile hydrocarbons intermediate between gasolene and cymogene, formerly used as a refrigerant.
• rhinasterthe black rhinoceros
• rhino-Of the nose.
• rhinodonA whale shark of the Indian Ocean.
• rhinopomeAny member of the bat genus Rhinopoma.
• rhinotillexomaniaCompulsive nose-picking; the insertion of a finger into one's nose.
• rhipidionIn the Greek Church, the eucharistic fan or flabellum.
• rhipidiumA scorpioid cyme whose successive pedicels follow a zigzag path on the same plane.
• rhipsalisAny plant of the genus Rhipsalis, epiphytic flowering plants in the cactus family, often known as mistletoe cacti.
• rhizanthA parasitic flowering plant, all of which were formerly assigned to the order Rhizantheae.
• rhizo-roots (of living organisms).
• rhizomaticResembling or related to a rhizome.
• rhizomeliaA disproportion of the length of the proximal limb, such as the shortened limbs of achondroplasia.
• rhizoristicRelating to the separation of the roots of an equation.
• rhodeoretinconvolvulin
• rhodizonic acidA colorless crystalline substance obtained from potassium carbonate and from certain quinones, which forms brilliant red, yellow, and purple salts.
• rhodo-rose-colored
• rhodomelA form of mead made with rosehips, rose petals, or rose attar.
• rhodospermAny seaweed with red spores, in the former class Rhodospermeae.
• RhodostauroticRosicrucian
• rhoeadic acidAn acid derived from the poppy Papaver rhoeas.
• rhoeadineAny of a group of benzazepine alkaloids found in the poppy.
• RhomaianOf or pertaining to the Eastern Roman (or Byzantine) empire; alternative form of Romaean.
• rhombosA musical instrument used in ancient mystical ceremonies, whirled to producing a roaring sound.
• rhomphaiaA large, broad sword used by the Thracians.
• rhopographyThe depiction of trivial, everyday things.
• rhoptryA specialized secretory organelle in some protozoans
• rhyacoliteA glassy feldspar found at Mount Somma in Italy.
• rhykenologistA person who collects woodworking planes.
• rhyncho-Concerning the beak or snout.
• rhynchodaeumA cavity in some gastropods that contains the proboscis.
• rhyparographA painter of sordid or distasteful subjects.
• rhyparographyThe painting, or literary description, of mean or sordid things; especially still-life or genre painting.
• rhypophagyThe feeding on filth
• rhypophobiaThe fear of defecation.
• rhysimeterAn instrument, similar to a pitot tube, for measuring the velocity of a fluid current, the speed of a ship, etc.
• rhytidAny undesirable wrinkle in the skin.
• rhytideA wrinkle, typically a facial wrinkle secondary to muscular contraction patterns in the skin.
• rhytidomeThe dead layers of plant bark (undergoing or having undergone secondary growth) external to that of the last formed periderm http://i.word.com/idictionary/rhytidome.
• rhytiphobiaThe fear of getting wrinkles.
• rhytonA container from which fluids are intended to be drunk, having one handle and usually a base in the form of a head.
• ripidoliteA translucent green chlorite mineral of micaceous structure; a hydrous silicate of alumina, magnesia, and iron.
• rise from the deadTo become alive (or undead) after having died.
• river horseA hippopotamus.
• RomanioteA member of a Jewish population living in Greece, historically distinct from the Sephardim, who settled in Greece later.
• -rrhaphysuture
• -rrheaflowing.
• -rrhexisrupture
• rupiaAn ulcer due to syphilis.
• rupophobiaThe fear of rubbish or dirt.
• rypophagousEating filth.
• SabaziosA god of the Phrygians and Thracians, depicted on horseback wielding a staff of power.
• Sacred WarAny of three wars fought (in 595-585 BCE, 449 BC-448 BCE and 357-346 BCE) by the Amphictyonic Council.
• Saint NicholasA 4th-century Greek bishop from Myra, Anatolia, patron saint of children, mariners and the unwed among others, functioning in multiple countries as a gift-giving figure around his feast day of December 6.
• salinonA particular figure bounded by four semicircles.
• salpingo-Fallopian tube.
• salt of the earthA person or group of people considered to represent the most decent and admirable parts of humanity.
• sampiThe obsolete Greek letter Ϡ, ϡ (s).
• sanidineA variety of orthoclase feldspar found as tabular crystals embedded in volcanic rocks. Some forms (called moonstone) exhibit adularescence.
• sapro-forms terms relating to dead or decaying material
• saprovoreAny organism that feeds on detritus
• sarco-flesh
• sarcodeA remedy made from healthy living tissue.
• sarcodoThe gelatinous material forming the bodies of the lowest animals; protoplasm.
• sarcoliteA tetragonal-dipyramidal mineral containing aluminum, calcium, fluorine, oxygen, silicon, and sodium.
• sarcoticProducing or promoting the growth of flesh.
• sarissophorosA light cavalry unit in Ancient Greece that held a long spear for charging and was equipped with several javelins for harassing the enemy.
• sarkiccarnal, fleshly (especially sensual)
• sarmassophobiaA fear of romantic interactions such as dating and kissing.
• sarothrumAny of the stiff hairs on a bee that collect pollen.
• satrapyThe territory governed by a satrap; a province of any of several ancient empires of West Asia (specifically, of the Median or Achaemenid empires or certain of their successors, including the Sasanian Empire and Hellenistic empires).
• satyricOf or pertaining to a satyr.
• satyrionAny of various kinds of orchids.
• satyriskA little satyr.
• satyromaniaExcessive sexual desire in men.