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13-letter words containing r, i, d, o

  • radiopacities — opaque to radiation; visible in x-ray photographs and under fluoroscopy (opposed to radiotransparent).
  • radiotelegram — a message transmitted by radiotelegraphy.
  • radioteletype — Also called radioteletypewriter [rey-dee-oh-tel-i-tahyp-rahy-ter, -tel-i-tahyp-rahy-] /ˌreɪ di oʊˌtɛl ɪˈtaɪpˌraɪ tər, -ˈtɛl ɪ taɪpˌraɪ-/ (Show IPA). a teletypewriter equipped for transmitting or receiving messages by radio instead of wire.
  • radius vector — Mathematics. the length of the line segment joining a fixed point or origin to a given point.
  • railroad flat — an apartment whose series of narrow rooms forms a more or less straight line.
  • railroad line — railway route
  • railroad worm — the larva of a fruit fly, Rhagoletis pomonella, that burrows through apples, forming tunnels that sometimes appear on the skin as faint depressions or darkened trails: a serious pest of apples in colder regions of North America.
  • raison d'etat — a purely political reason for governmental action, based on the national interest and often violating principles of justice.
  • raison d'etre — reason or justification for being or existence: Art is the artist's raison d'être.
  • randomization — to order or select in a random manner, as in a sample or experiment, especially in order to reduce bias and interference caused by irrelevant variables; make random.
  • re-forwarding — toward or at a place, point, or time in advance; onward; ahead: to move forward; from this day forward; to look forward.
  • reading group — a group of people who meet regularly to discuss a book that they have all read
  • reconsolidate — to bring together (separate parts) into a single or unified whole; unite; combine: They consolidated their three companies.
  • reconstituted — constituted again, especially of a liquid product made by adding water to dry solids from which the water has been evaporated: reconstituted orange juice.
  • recording van — a van containing sound and image recording equipment, used as a mobile recording studio
  • recordkeeping — the maintenance of a history of one's activities, as financial dealings, by entering data in ledgers or journals, putting documents in files, etc.
  • rectitudinous — characterized by or given to rectitude.
  • red delicious — a deep-red type of Delicious apple.
  • redescription — the act of redescribing
  • redesignation — an act of designating.
  • redial button — a button on a telephone, allowing the user to dial a number again
  • redisposition — the withdrawal and redistribution of armed forces with the aim of more effective use
  • redissolution — the act of redissolving
  • reduplication — the act of reduplicating; the state of being reduplicated.
  • reindeer moss — any of several lichens of the genus Cladonia, especially the gray, many-branched C. rangiferina, of arctic and subarctic regions, eaten by reindeer and caribou.
  • reinvigorated — to give vigor to; fill with life and energy; energize.
  • rendezvousing — an agreement between two or more persons to meet at a certain time and place.
  • retinoic acid — a vitamin A derivative, C20H28O2, used in the treatment of acne, skin wrinkles, etc.
  • revendication — the process or act of revendicating
  • reverse video — a mode on the display screen of a computer in which the colors normally used for characters and background are reversed.
  • revindication — the act of vindicating.
  • rhodesian man — an extinct Pleistocene human whose cranial remains were found at Kabwe, in Zambia: formerly in some classifications Homo rhodesiensis but now considered archaic Homo sapiens.
  • rhodochrosite — a mineral, manganese carbonate, MnCO 3 , commonly containing some iron and calcium, and usually rose-red in color: a minor ore of manganese; manganese spar.
  • rialto bridge — a bridge over the Grand Canal in Venice, Italy, liking Rialto Island with San Marco Island
  • ribbon window — a long window made up of a number of individual compartments set together horizontally with little or no division.
  • richmond hill — a town in SE Ontario, in S Canada, N of Toronto.
  • ride the rods — to steal a ride on a freight train
  • riding school — a place where equitation is taught.
  • ring compound — a compound whose structural formula contains a closed chain or ring of atoms; a cyclic compound. Compare cyclic (def 3).
  • ringed plover — any of several cosmopolitan plovers of the genus Charadrius, especially C. hiaticula, brownish above and white below with a black band around the breast.
  • rio da duvida — former name of Roosevelt, Río.
  • river dolphin — any freshwater cetacean of the family Platanistidae, inhabiting rivers of North and South America and S Asia. They are smaller than marine dolphins and have a longer narrower snout
  • road accident — a traffic accident involving vehicles, pedestrians or cyclists
  • road-blocking — an obstruction placed across a road, especially of barricades or police cars, for halting or hindering traffic, as to facilitate the capture of a pursued car or inspection for safety violations.
  • robben island — a small island in South Africa, 11 km (7 miles) off the Cape Peninsula: formerly used by the South African government to house political prisoners
  • robot dancing — a dance of the 1980s characterized by jerky mechanical movements
  • rock hounding — the activity of searching for and collecting rocks, fossils, or minerals.
  • rock-fill dam — a dam built mainly of rocks of various sizes fitted compactly together.
  • rogation days — Usually, rogations. Ecclesiastical. solemn supplication, especially as chanted during procession on the three days (Rogation Days) before Ascension Day.
  • rogue dialler — a dial-up connection placed on a computer without the user's knowledge which, when the user tries to connect to the internet, automatically connects to a premium-rate phone number
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