gravity-operated
41track — Synonyms and related words: L, Rugby, a reckoning of, account of, acrobatics, afterclap, aftercrop, aftereffect, afterglow, aftergrowth, afterimage, aftermath, aftertaste, agonistics, aim, air lane, alameda, alley, apprehend, archery ground,… …
42tram — Synonyms and related words: L, branch, cable railway, cog railway, el, electric, electric car, electric railway, elevated, elevated railway, embankment, feeder, feeder line, gravity operated railway, horse railway, junction, light railroad, line …
43trestle — Synonyms and related words: L, branch, buck, cable railway, clotheshorse, cog railway, el, electric railway, elevated, elevated railway, embankment, feeder, feeder line, gravity operated railway, horse, horse railway, junction, light railroad,… …
44trunk — Synonyms and related words: L, WATS, WATS line, anatomy, anthrophore, antlia, axis, baluster, balustrade, banister, barrel, base, beak, beezer, bill, bin, body, bole, bones, boot, box, branch, bugle, cable, cable railway, cane, carcass,… …
45trunk line — Synonyms and related words: L, WATS, WATS line, branch, cable, cable railway, co ax, coaxial cable, cog railway, concentric cable, el, electric railway, elevated, elevated railway, embankment, feeder, feeder line, gravity operated railway, horse… …
46tube — Synonyms and related words: Amtrak, L, Photronic cell, adjutage, amplifier, anode, attenuator, audio frequency tube, baggage train, ballast regulator, ballast tube, barrel, base, beam switching tube, bole, branch, cable railroad, cable railway,… …
47turnout — Synonyms and related words: GNP, L, accouterments, apparatus, apparel, assemblage, assemblee, assembly, assignation, at home, attendance, audience, ball, box office, boycott, boycottage, branch, brawl, cable railway, caparison, caucus, clothing,… …
48underground — Synonyms and related words: Amtrak, Charley, L, Trojan horse, VC, Vietcong, abstruse, agreement to disagree, alienated, alienation, alternative, antiestablishment, apostasy, at odds with, at rest, at variance with, avant garde, back door, back… …
49space exploration — Investigation of the universe beyond Earth s atmosphere by means of manned and unmanned spacecraft. Study of the use of rockets for spaceflight began early in the 20th century. Germany s research on rocket propulsion in the 1930s led to… …
50Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity. Computer scientist Manindra Agrawal of the… …
