12-letter words containing a, g, r, o, i
- retail group — a group of companies under single ownership, which sell goods to individual customers
- retrolingual — situated behind or near the base of the tongue.
- revegetation — to cause vegetation to grow again on: to revegetate eroded lands.
- rhinorrhagia — an extreme nosebleed
- rhizophagous — feeding on roots.
- right of way — a common law or statutory right granted to a vehicle, as an airplane or boat, to proceed ahead of another.
- ring-a-levio — a children's game in which members of one group try to find and capture hiding members of another group: a captured player is kept in a circle drawn on the ground and is set free when tagged by a teammate
- rio gallegos — a seaport in S Argentina, in S Patagonia.
- ripe old age — advanced age
- road pricing — Road pricing is a system of making drivers pay money for driving on certain roads by electronically recording the movement of vehicles on those roads.
- roasting ear — an ear of sweet corn suitable for roasting while still in the husk.
- rock carving — the practice of carving on rock
- rock glacier — a mass of rock resembling a valley glacier that moves or is moved down a slope by its own weight or by the action of frost and interstitial ice.
- role playing — role-play used as a method of training or education
- role-playing — a method of instruction or psychotherapy aimed at changing attitudes and behavior, in which participants act out designated roles relevant to real-life situations.
- rolling plan — a plan which is designed to continue over a period of time and is subject to regular review and updating
- rolling road — A rolling road is a piece of machinery on which the wheels of a vehicle can ride in order to test how well the vehicle works under road conditions that are created artificially.
- roofing nail — a short nail for nailing asphalt shingles or the like, having a broad head.
- rose pogonia — a North American terrestrial orchid, Pogonia ophioglossoides, having a fragrant, usually solitary rose-pink or white flower.
- sacrilegious — pertaining to or involving sacrilege: sacrilegious practices.
- sail through — If someone or something sails through a difficult situation or experience, they deal with it easily and successfully.
- sailboarding — windsurfing.
- sanguiferous — conveying blood, as a blood vessel.
- sanguivorous — feeding on blood, as a bat or insect.
- saprobiology — the branch of ecology that studies decaying organic matter or environments, especially saprophytes that derive nourishment in this way.
- saronic gulf — an inlet of the Aegean, on the SE coast of Greece, between Attica and the Peloponnesus. 50 miles (80 km) long; 30 miles (48 km) wide.
- scenographic — the art of representing objects in accordance with the rules of perspective.
- scotch grain — a coarse, pebble-grained finish given to heavy leather, esp. for men's shoes
- scouring pad — a small pad, as of steel wool or plastic mesh, used for scouring pots, pans, etc.
- scrapbooking — hobby: collaging
- sea crossing — a journey by sea from one coast to another
- seismography — the scientific measuring and recording of the shock and vibrations of earthquakes.
- semi-organic — noting or pertaining to a class of chemical compounds that formerly comprised only those existing in or derived from plants or animals, but that now includes all other compounds of carbon.
- semiglobular — possessing the form of half a globe; hemispheric.
- seronegative — showing no significant level of serum antibodies, or other immunologic marker in the serum, that would indicate previous exposure to the infectious agent being tested.
- shared logic — the sharing of a central processing unit and associated software among several terminals
- shareholding — a holder or owner of shares, especially in a company or corporation.
- shooting war — open conflict between hostile nations involving direct military engagements.
- shopbreaking — the act of breaking into a shop
- short-acting — (of a drug) quickly effective, but requiring regularly repeated doses for long-term treatment, being rapidly absorbed, distributed in the body, and excreted
- siderography — the art or technique of engraving on steel.
- sigma baryon — an unstable hyperon having positive, negative, or zero electric charge and strangeness −1. Symbol: Σ.
- signal board — a board for displaying electrically transmitted signals and indicating their source.
- signal corps — a branch of the army responsible for military communications, meteorological studies, and related work.
- signal tower — a tower from which railway signals are controlled or displayed
- significator — a planet deemed significant in astrology
- sloganeering — Sloganeering is the use of slogans by people such as politicians or advertising agencies.
- smoking area — a designated area in which smoking is permitted
- snowboarding — a board for gliding on snow, resembling a wide ski, to which both feet are secured and that one rides in an upright position.
- sociographic — the branch of sociology that uses statistical data to describe social phenomena.