12-letter words containing g, a, r, d
- producer gas — a mixture of carbon monoxide and nitrogen produced by passing air over hot coke, used mainly as a fuel
- profile drag — the sum of the surface friction drag and the form drag for a body moving subsonically through a fluid
- progradation — seaward growth of a beach, delta, fan, etc., by progressive deposition of sediment by rivers or shoreline processes.
- prolog-linda — 1. Prolog extended with Linda-style parallelism. Proc 4th Australian Conf on Artif Intell. 2. Neil MacDonald, U Edinburgh 1989. Another Prolog extended with Linda, implemented on a Computing Surface.
- proofreading — correction of text
- propagandism — the art, system, or use of propaganda
- propagandist — a person involved in producing or spreading propaganda.
- propagandize — to propagate or publicize (principles, dogma, etc.) by means of propaganda.
- pseudography — writing that does not follow conventional spelling or usage
- pyramidology — a belief system based on the supposed occult significance of the Egyptian pyramids
- quadragesima — the first Sunday in Lent.
- quadrangular — having four angles and four sides; having the shape of a quadrangle.
- quadraplegic — quadriplegic.
- quadriplegia — paralysis of all four limbs or of the entire body below the neck.
- quadriplegic — a person with quadriplegia.
- radical sign — the symbol √ or indicating extraction of a root of the quantity that follows it, as √25=5 or .
- radio galaxy — a galaxy that emits much more strongly in the radio part of the spectrum than does a typical galaxy.
- radiobiology — the branch of biology dealing with the effects of radiation on living matter.
- radioecology — the branch of ecology concerned with the effects of radioactivity on the environment
- radiographer — X-ray technician
- radiological — of or relating to radiology.
- ragged robin — a plant, Lychnis flos-cuculi, of the pink family, having pink or white flowers with dissected petals.
- range finder — any of various instruments for determining the distance from the observer to a particular object, as for sighting a gun or adjusting the focus of a camera.
- rangefinding — the act or process of determining the distance of an object from the observer
- rating badge — a badge that indicates the rank and specialty of a petty officer: worn on the upper left sleeve.
- read-through — reading (def 1).
- reading book — a book for people who are learning to read, to help them become accustomed to looking at and understanding written words
- reading desk — a desk for use in reading, especially by a person standing.
- reading lamp — A reading lamp is a small lamp that you keep on a desk or table. You can move part of it in order to direct the light to where you need it for reading.
- reading list — a list of sources (recommended by a teacher or university lecturer) which provide additional or background information on a subject being studied
- reading room — a room set aside for reading, as in a library or club.
- reading week — university: week-long break from classes
- rear-engined — (of a vehicle) with the engine at the back
- red brigades — an extreme leftist terrorist organization in Italy.
- red goatfish — a goatfish, Mullus auratus.
- red kangaroo — a large Australian kangaroo, Macropus rufus, the male of which has a reddish coat
- redelegation — a group or body of delegates: Our club sent a delegation to the rally.
- redesignated — to mark or point out; indicate; show; specify.
- redintegrate — to make whole again; restore to a perfect state; renew; reestablish.
- refrigerated — made frozen or cold, esp for preservative purposes; chilled or frozen
- regardlessly — having or showing no regard; heedless; unmindful (often followed by of).
- regurgitated — to give back or repeat, especially something not fully understood or assimilated: to regurgitate the teacher's lectures on the exam.
- renegotiated — to negotiate again, as a loan, treaty, etc.
- reprimanding — a severe reproof or rebuke, especially a formal one by a person in authority.
- rhodes grass — a grass, Chloris gayana, native to Africa, used as pasturage and fodder in warm climates.
- riding habit — habit1 (def 11).
- right-angled — A right-angled triangle has one angle that is a right angle.
- right-handed — having the right hand or arm more serviceable than the left; using the right hand by preference: a right-handed painter.
- right-hander — a person who is right-handed, especially a baseball pitcher who throws with the right hand.
- ripe old age — advanced age