16-letter words containing w, e, a, r
- darwin's finches — the finches of the subfamily Geospizinae of the Galapagos Islands, showing great variation in bill structure and feeding habits: provided Darwin with evidence to support his theory of evolution
- darwinian theory — Darwin's theory of evolution, which holds that all species of plants and animals developed from earlier forms by hereditary transmission of slight variations in successive generations, and that natural selection determines which forms will survive
- data warehousing — the use of large amounts of data taken from multiple sources to create reports and for data analysis
- de broglie waves — the set of waves that represent the behaviour of an elementary particle, or some atoms and molecules, under certain conditions. The de Broglie wavelength, λ, is given by λ = h/mv, where h is the Planck constant, m the mass, and v the velocity of the particle
- de morgan's laws — (in formal logic and set theory) the principles that conjunction and disjunction, or union and intersection, are dual. Thus the negation of P & Q is equivalent to not-P or not-Q
- declare war (on) — to make a formal declaration of being at war (with)
- dew-point spread — the degrees of difference between the air temperature and the dew point
- distributive law — a theorem asserting that one operator can validly be distributed over another
- down memory lane — If you say that someone is taking a walk or trip down memory lane, you mean that they are talking, writing, or thinking about something that happened to them a long time ago.
- draw and quarter — to disembowel and dismember (a person) after hanging
- draw the longbow — to exaggerate in telling something
- drop (down) dead — If you say that a person or animal dropped dead or dropped down dead, you mean that they died very suddenly and unexpectedly.
- dual carriageway — divided highway.
- east gwillimbury — a town in S Ontario, in S Canada.
- eastern whipbird — an Australian whipbird, Psophodes olivaceus
- edward the elder — died 924 ad, king of England (899–924), son of Alfred the Great
- electrical power — electricity
- elevated railway — an urban railway track built on supports above a road
- exploration well — An exploration well is a borehole which is drilled to find out if there is any oil or gas in a place.
- fairview heights — a city in SW Illinois.
- farewell address — (initial capital letters) U.S. History. a statement that President George Washington published in a Philadelphia newspaper in 1796 to announce that he would not run for a third term and to give his views on foreign and domestic policy.
- farewell to arms — a novel (1929) by Ernest Hemingway.
- federation wheat — an early-maturing drought-resistant variety of wheat developed by William Farrar in 1902
- fellow passenger — a person travelling on the same vehicle, plane, ship etc as you
- fellow traveller — a companion on a journey
- firewall machine — (networking, security) A dedicated gateway server with special security precautions on it, used to service external connections (typically from the public Internet). The firewall machine protects servers and networks hidden behind it from crackers. The typical firewall is an inexpensive microprocessor-based Unix machine with no critical data, with public network ports on it, but just one carefully watched connection back to the rest of the cluster. The special precautions may include threat monitoring, call-back, and even a complete iron box keyable to particular incoming IDs or activity patterns. The type of network and security environment of a firewall machine is often called a De-Militarised Zone (DMZ). It may contain other servers such as e-mail servers or proxy gateways - machines that need to be publicly accessible but also need some access to internal systems. Also known as a (Venus) flytrap after the insect-eating plant.
- firework display — a public event at which fireworks are set alight
- first-aid worker — someone who is trained to give immediate medical help in an emergency
- flower arranging — Flower arranging is the art or hobby of arranging cut flowers in a way which makes them look attractive.
- follow-my-leader — a game in which the players must repeat the actions of the leader
- forswear oneself — to swear falsely; perjure oneself
- fort leavenworth — a military reservation and U.S. Army training center in E Kansas adjoining Leavenworth, one of the oldest (1827) military posts W of the Mississippi and site of federal penitentiary.
- forward delivery — delivery at a future date.
- forward exchange — a foreign bill purchased at a stipulated price and payable at a future date.
- forwarding agent — freight forwarder.
- francis townsend — Francis Everett, 1867–1960, U.S. physician and proposer of the Townsend plan.
- freshwater pearl — any of the small pearls produced especially by freshwater mussels.
- functional water — water containing additives that provide extra nutritional value
- gasoline-powered — using gasoline as fuel
- geothermal power — power generated using steam produced by heat emanating from the molten core of the earth
- great horned owl — a large, brown-speckled owl, Bubo virginianus, common in the Western Hemisphere, having prominent ear tufts.
- growth potential — capability of expanding
- growth substance — any substance, produced naturally by a plant or manufactured commercially, that, in very low concentrations, affects plant growth; a plant hormone
- hairy woodpecker — a North American woodpecker, Picoides villosus, resembling but larger than the downy woodpecker.
- hammer (away) at — to work continuously or energetically at
- hand screw clamp — a screw that can be tightened by the fingers, without the aid of a tool.
- hanging wardrobe — a wardrobe containing a rail with a large amount of space underneath, so that clothes can be hung on hangers placed onto the rail
- hard-packed snow — snow which becomes very firmly packed as it becomes refrozen due to cold weather conditions rather than melting
- have a word with — discuss
- hawaiian gardens — a town in SW California.