E layer
         n 1: a region of the ionosphere (from 50 to 90 miles up) that
               reflects radio waves of medium length [syn: {Heaviside
               layer}, {Kennelly-Heaviside layer}, {E layer}, {E region}]

English Dictionary: E layer	by the DICT Development Group
From WordNet (r) 3.0 (2006) [wn]:
Euler n Swiss mathematician (1707-1783) [syn: Euler, {Leonhard Euler}]
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
{Jack rabbit} (Zo[94]l.), any one of several species of large             American hares, having very large ears and long legs. The             California species ({Lepus Californicus}), and that of             Texas and New Mexico ({L. callotis}), have the tail black             above, and the ears black at the tip. They do not become             white in winter. The more northern prairie hare ({L.             campestris}) has the upper side of the tail white, and in             winter its fur becomes nearly white.          {Jack rafter} (Arch.), in England, one of the shorter rafters             used in constructing a hip or valley roof; in the United             States, any secondary roof timber, as the common rafters             resting on purlins in a trussed roof; also, one of the             pieces simulating extended rafters, used under the eaves             in some styles of building.          {Jack salmon} (Zo[94]l.), the wall-eyed pike, or glasseye.          {Jack sauce}, an impudent fellow. [Colloq. & Obs.]          {Jack shaft} (Mach.), the first intermediate shaft, in a             factory or mill, which receives power, through belts or             gearing, from a prime mover, and transmits it, by the same             means, to other intermediate shafts or to a line shaft.          {Jack sinker} (Knitting Mach.), a thin iron plate operated by             the jack to depress the loop of thread between two             needles.          {Jack snipe}. (Zo[94]l.) See in the Vocabulary.          {Jack staff} (Naut.), a staff fixed on the bowsprit cap, upon             which the jack is hoisted.          {Jack timber} (Arch.), any timber, as a rafter, rib, or             studding, which, being intercepted, is shorter than the             others.          {Jack towel}, a towel hung on a roller for common use.          {Jack truss} (Arch.), in a hip roof, a minor truss used where             the roof has not its full section.          {Jack tree}. (Bot.) See 1st {Jack}, n.          {Jack yard} (Naut.), a short spar to extend a topsail beyond             the gaff.          {Blue jack}, blue vitriol; sulphate of copper.          {Hydraulic jack}, a jack used for lifting, pulling, or             forcing, consisting of a compact portable hydrostatic             press, with its pump and a reservoir containing a supply             of liquid, as oil.          {Jack-at-a-pinch}.             (a) One called upon to take the place of another in an                   emergency.             (b) An itinerant parson who conducts an occasional                   service for a fee.          {Jack-at-all-trades}, one who can turn his hand to any kind             of work.          {Jack-by-the-hedge} (Bot.), a plant of the genus {Erysimum}             ({E. alliaria}, or {Alliaria officinalis}), which grows             under hedges. It bears a white flower and has a taste not             unlike garlic. Called also, in England, {sauce-alone}.             --Eng. Cyc.          {Jack-in-a-box}.             (a) (Bot.) A tropical tree ({Hernandia sonora}), which                   bears a drupe that rattles when dry in the inflated                   calyx.             (b) A child's toy, consisting of a box, out of which,                   when the lid is raised, a figure springs.             (c) (Mech.) An epicyclic train of bevel gears for                   transmitting rotary motion to two parts in such a                   manner that their relative rotation may be variable;                   applied to driving the wheels of tricycles, road                   locomotives, and to cotton machinery, etc.; an                   equation box; a jack frame; -- called also                   {compensating gearing}.             (d) A large wooden screw turning in a nut attached to the                   crosspiece of a rude press.          {Jack-in-office}, an insolent fellow in authority. --Wolcott.          {Jack-in-the-bush} (Bot.), a tropical shrub with red fruit             ({Cordia Cylindrostachya}).          {Jack-in-the-green}, a chimney sweep inclosed in a framework             of boughs, carried in Mayday processions.          {Jack-in-the-pulpit} (Bot.), the American plant {Aris[91]ma             triphyllum}, or Indian turnip, in which the upright spadix             is inclosed.          {Jack-of-the-buttery} (Bot.), the stonecrop ({Sedum acre}).                      {Jack-of-the-clock}, a figure, usually of a man, on old             clocks, which struck the time on the bell.          {Jack-on-both-sides}, one who is or tries to be neutral.          {Jack-out-of-office}, one who has been in office and is             turned out. --Shak.          {Jack the Giant Killer}, the hero of a well-known nursery             story.          {Jack-with-a-lantern}, {Jack-o'-lantern}.             (a) An ignis fatuus; a will-o'-the-wisp. [bd][Newspaper                   speculations] supplying so many more jack-o'-lanterns                   to the future historian.[b8] --Lowell.             (b) A lantern made of a pumpkin so prepared as to show in                   illumination the features of a human face, etc.          {Yellow Jack} (Naut.), the yellow fever; also, the quarantine             flag. See {Yellow flag}, under {Flag}.
From U.S. Gazetteer (1990) [gazetteer]:
El Rio, CA (CDP, FIPS 22370)       Location: 34.24265 N, 119.15873 W       Population (1990): 6419 (1762 housing units)       Area: 4.2 sq km (land), 0.0 sq km (water)
From U.S. Gazetteer (1990) [gazetteer]:
Ellery, IL       Zip code(s): 62833
From U.S. Gazetteer (1990) [gazetteer]:
Elloree, SC (town, FIPS 23470)       Location: 33.52979 N, 80.57237 W       Population (1990): 939 (383 housing units)       Area: 2.3 sq km (land), 0.0 sq km (water)       Zip code(s): 29047
From U.S. Gazetteer (1990) [gazetteer]:
Elora, TN       Zip code(s): 37328
From U.S. Gazetteer (1990) [gazetteer]:
Elroy, NC (CDP, FIPS 21130)       Location: 35.33396 N, 77.92061 W       Population (1990): 4028 (1654 housing units)       Area: 17.5 sq km (land), 0.0 sq km (water)    Elroy, WI (city, FIPS 23800)       Location: 43.74274 N, 90.27236 W       Population (1990): 1533 (653 housing units)       Area: 4.4 sq km (land), 0.0 sq km (water)       Zip code(s): 53929
From U.S. Gazetteer (1990) [gazetteer]:
Elyria, NE (village, FIPS 15605)       Location: 41.67969 N, 99.00526 W       Population (1990): 61 (34 housing units)       Area: 0.7 sq km (land), 0.0 sq km (water)       Zip code(s): 68837    Elyria, OH (city, FIPS 25256)       Location: 41.37987 N, 82.10558 W       Population (1990): 56746 (22544 housing units)       Area: 50.3 sq km (land), 0.1 sq km (water)       Zip code(s): 44035
From The Free On-line Dictionary of Computing (15Feb98) [foldoc]:
EULER          [Named after the Swiss mathematician Leonhard Euler       (1707-1783)] A revision of {ALGOL} by {Niklaus Wirth}.   A       small predecessor of {Pascal}.          ["EULER: A Generalisation of ALGOL and Its Formal Definition",       N. Wirth, CACM 9(1) (Jan 1966) and 9(2) (Feb 1966)].