lit up

lit

1 [lit]
verb
1.
a simple past tense and past participle of light1.
adjective
2.
Slang. under the influence of liquor or narcotics; intoxicated (usually followed by up ).

Origin:
1910–15 for def 2

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World English Dictionary
lit (lɪt)
 
vb
1.  a past tense and past participle of light
2.  an alternative past tense and past participle of light

lit up
 
adj
1.  drunk
2.  drugged, esp on heroin

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

light
"brightness," O.E. leht, earlier leoht, from W.Gmc. *leukhtam (cf. O.Fris. liacht, M.Du. lucht, Ger. Licht), from PIE *leuk- "light, brightness" (cf. Skt. rocate "shines;" Arm. lois "light," lusin "moon;" Gk. leukos "bright, shining, white;" L. lucere "to shine," lux "light," lucidus "clear;" O.C.S.
luci "light;" Lith. laukas "pale;" Welsh llug "gleam, glimmer;" O.Ir. loche "lightning," luchair "brightness;" Hittite lukezi "is bright"). The -gh- was an Anglo-Fr. scribal attempt to render the O.E. hard -h- sound, which has since disappeared. The figurative spiritual sense was in O.E.; the sense of "mental illumination" is first recorded mid-15c. Meaning "something used for igniting" is from 1680s. The related verb is from O.E. lyhtan (cf. O.S. liohtian, Ger. leuchten, Goth. liuhtjan).

light
"not heavy," from O.E. leoht, from P.Gmc. *lingkhtaz (cf. O.N. lettr, Swed. lätt, O.Fris., M.Du. licht, Ger. leicht, Goth. leihts), from PIE base *le(n)gwh- "light, easy, agile, nimble" (cf. L. levis "light;" see lever). The notion in make light of (1520s) is of "unimportance."
Alternative spelling lite, the darling of advertisers, is first recorded 1962. Light-skirts "woman of easy virtue" is attested from 1590s.

light
"touch down," from O.E. lihtan "to alight," from P.Gmc. *linkhtijan, lit. "to make light," from *lingkhtaz "not heavy" (see light (adj.)). Apparently the ground sense is "to dismount a horse, etc., and thus relieve it of one's weight." To light out "leave hastily" is 1870,
from a nautical meaning "move out, move heavy objects," of unknown origin but perhaps belonging to this word.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

light (līt)
n.

  1. Electromagnetic radiation that has a wavelength in the range from about 4,000 (violet) to about 7,700 (red) angstroms and may be perceived by the normal unaided human eye.

  2. Electromagnetic radiation of any wavelength.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
light   (līt)  Pronunciation Key 
  1. Electromagnetic radiation that can be perceived by the human eye. It is made up of electromagnetic waves with wavelengths between 4 × 10-7 and 7 × 10-7 meters. Light, and all other electromagnetic radiation, travels at a speed of about 299,728 km (185,831 mi) per second in a vacuum. See also photon.

  2. Electromagnetic energy of a wavelength just outside the range the human eye can detect, such as infrared light and ultraviolet light. See Note at electromagnetic radiation.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Cultural Dictionary

light definition


The type of electromagnetic wave that is visible to the human eye. Visible light runs along a spectrum from the short wavelengths of violet to the longer wavelengths of red. (See photon.)

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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American Heritage
Abbreviations & Acronyms
lit
literature (academic course)
LIT
  1. leukocyte immunization therapy

  2. Little Rock National Airport/Adams Field

The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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