HELP
 

All Words Glossary

Glossary of Astronomy Terms
beginning with letter L
Browse the Astronomy Glossary
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Lacerta Tweet Definition of Lacerta Like Definition of Lacerta on Facebook
proper noun
  1. (constellation) An inconspicuous autumn constellation of the northern sky, said to resemble a lizard. It lies between the constellations of Cygnus and Andromeda.
last quarter Tweet Definition of last quarter Like Definition of last quarter on Facebook
noun
  1. the waning lunar phase half way between full moon and new moon.
Leo Minor Tweet Definition of Leo Minor Like Definition of Leo Minor on Facebook
proper noun
  1. (constellation) A spring constellation of the northern sky, said to resemble a small lion. It lies north of the constellation Leo and south of Ursa Major.
leonid Tweet Definition of leonid Like Definition of leonid on Facebook
noun
  1. one of a shower of meteorites which fall from the area of sky around the constellation Leo in November
  • 1974: I wrote my first story about the ghost of a horse leaping from a cascade of flame just after the leonids had been more torrential than men had remembered them for centuries. " Guy Davenport, Tatlin!
Lepus Tweet Definition of Lepus Like Definition of Lepus on Facebook
proper noun
  1. (constellation) A winter constellation of the northern sky, said to resemble a rabbit. It lies south of the constellation Orion.
Libra Tweet Definition of Libra Like Definition of Libra on Facebook
proper noun
  1. (constellation): A constellation of the zodiac, supposedly shaped like a set of scales.
  2. (astrology): The astrological sign for the scales, covering September 23 - October 22.
light curve Tweet Definition of light curve Like Definition of light curve on Facebook
noun
  1. (astronomy) a graph of the intensity of radiation from an astronomical object as it changes with time
light-year Tweet Definition of light-year Like Definition of light-year on Facebook
noun (Plural:light-years)
  1. An alternative spelling of light year.
limb Tweet Definition of limb Like Definition of limb on Facebook
noun
  1. A major appendage of human or animal, used for locomotion (such as an arm, leg or wing)
  2. A branch of a tree.
  3. (archery) The part of the bow, from the handle to the tip.
verb
  1. To remove the limbs of an animal or tree.
Little Dipper Tweet Definition of Little Dipper Like Definition of Little Dipper on Facebook
proper noun
  1. (constellation) A bright circumpolar asterism of the northern sky, said to resemble a ladle or cart. It is part of the constellation Ursa Minor and includes the northern pole star Polaris.
loadstar Tweet Definition of loadstar Like Definition of loadstar on Facebook
noun
  1. A star used as a navigation reference (particularly a pole star such as Polaris).
  2. A guiding tenet.
Local Group Tweet Definition of Local Group Like Definition of Local Group on Facebook
nounlocal, Local group, Group
  1. (astronomy) the small cluster of galaxies that contains the Milky Way galaxy; includes Andromeda, Triangulum, the Large Magellanic Cloud, Small Magellanic Cloud and others
lodestar Tweet Definition of lodestar Like Definition of lodestar on Facebook
noun
  1. A star used as a navigation reference (particularly a pole star such as Polaris.
  2. A guiding tenet.
Lucifer Tweet Definition of Lucifer Like Definition of Lucifer on Facebook
proper noun
  1. A name of the Christian devil, referring to him before his fall into sin.
  2. The planet Venus as the daystar.
luminary Tweet Definition of luminary Like Definition of luminary on Facebook
noun
  1. one that is an inspiration to others : one who has achieved success in his chosen field : a leading light
played host to a huge gathering of international luminaries -- Edmund Stevens
  1. an artificial light : an illumination
  2. a body that gives light; especially : one of the heavenly bodies
luminosity Tweet Definition of luminosity Like Definition of luminosity on Facebook
noun
  1. the state of being luminous, or a luminous object; brilliance or radiance
  2. the ratio of luminous flux to radiant flux at the same wavelength; the luminosity factor
  1. (star) the rate at which a star radiates energy in all directions
lunar Tweet Definition of lunar Like Definition of lunar on Facebook
adjective
  1. Pertaining to the moon.
  2. Crescent shaped, lunate.
  3. Of, or relating to silver.
lunar eclipse Tweet Definition of lunar eclipse Like Definition of lunar eclipse on Facebook
noun
  1. (astronomy) A phenomenon occuring when the Earth casts a shadow over the Moon
lunar month Tweet Definition of lunar month Like Definition of lunar month on Facebook
noun
  1. a period from one new moon until the next.
  2. a synodic month of approximately 29.53 days, measured from a lunar phase until the return of that same phase.
  3. a sidereal month of approximately 27.32 days, the length of time taken by the moon in its orbit about the Earth to return to the same point as viewed against the background of stars.
lunar year Tweet Definition of lunar year Like Definition of lunar year on Facebook
noun
  1. a year determined by a certain number of phases of the moon, as opposed to the passage of the earth around the sun
lunation Tweet Definition of lunation Like Definition of lunation on Facebook
noun
  1. a month of approximately 29.53 days, measured from a lunar phase until the return of that same phase. On average, the number of days between Full Moons is about 29.5306 days. The actual number of days may differ from the average number by more than a half day. From one Full Moon to the next, the number of days in one lunation can vary between 29.272 and 29.833 days.
  2. The name or term given the irregular period from one new moon until the next.
Lupus Tweet Definition of Lupus Like Definition of Lupus on Facebook
proper noun
  1. (constellation) A summer constellation of the northern sky, said to resemble a wolf. It lies south of the constellation Libra.

Browse the Dictionary
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

 Find:
  Words Starting With:
  Words Ending With:
  Words Containing:
  Words That Match:

 
Translate Into:
Dutch   French   German
  
Italian   Spanish
    Show results per page.

   
Allwords Copyright 1998-2019 All rights reserved.

privacy policy