air-breathing power plant
21Ethereal being — Water nymph by John Collier, 1923. Ethereal beings, according to some belief systems and occult theories, are mystic entities that usually are not made of ordinary matter. Despite the fact that they are believed to be essentially incorporeal,… …
22Hypothetical types of biochemistry — are forms of biochemistry speculated to be scientifically viable but not proven to exist at this time. While the kinds of living beings we know on earth commonly use carbon for basic structural and metabolic functions, water as a solvent and DNA… …
23fish — fishless, adj. /fish/, n., pl. (esp. collectively) fish, (esp. referring to two or more kinds or species) fishes, v. n. 1. any of various cold blooded, aquatic vertebrates, having gills, commonly fins, and typically an elongated body covered with …
24Fish — /fish/, n. Hamilton, 1808 93, U.S. statesman: secretary of state 1869 77. * * * I Any of more than 24,000 species of cold blooded vertebrates found worldwide in fresh and salt water. Living species range from the primitive lampreys and hagfishes… …
25Magic of Dungeons & Dragons — consists of spells used in the settings of the role playing game, Dungeons Dragons (D D). There is little if any similarity between these fictional spells and any actual historical mythology. D D defined the genre of fantasy role playing games,… …
26Iran — /i ran , i rahn , uy ran /, n. a republic in SW Asia. 67,540,002; ab. 635,000 sq. mi. (1,644,650 sq. km). Cap.: Teheran. Formerly (until 1935), Persia. * * * Iran Introduction Iran Background: Known as Persia until 1935, Iran became an Islamic… …
27List of Russian people — The Millennium of Russia monument in Veliky Novgorod, featuring the statues and reliefs of the most celebrated people in the first 1000 years of Russian history …
28Submarine — For other uses, see Submarine (disambiguation). A Japan Maritime Self Defense Force Oyashio class submarine in 2006 A submarine is a watercraft capable of independent operation below the surface of the water. It differs from a submersible, which… …
29Greece — /grees/, n. 1. Ancient Greek, Hellas. Modern Greek, Ellas. a republic in S Europe at the S end of the Balkan Peninsula. 10,583,126; 50,147 sq. mi. (129,880 sq. km). Cap.: Athens. 2. a city in W New York. 16,177. * * * Greece Introduction Greece… …
30Spacecraft propulsion — A remote camera captures a close up view of a Space Shuttle Main Engine during a test firing at the John C. Stennis Space Center in Hancock County, Mississippi Spacecraft propulsion is any method used to accelerate spacecraft and artificial… …
