lunaradj/ˈluːnə/

• 1

  Of, pertaining to, or resembling the Moon (that is, Luna, the Earth's moon).

  • lunar observations  a lunar eclipse
  • By two lunar obſervations the long[itude] was 9° 57′ 30″ E. agreeing within 37′ by the watch, though the day before the long. by moon and watch differed 2° 35′.
• 2

  Shaped like a crescent moon; lunate.

  • Her tears purſu'd her words, and while ſhe ſpoke / The Goddeſs nodded, and her altar ſhook: / The temple doors, as with a blaſt of wind, / Were heard to clap; the lunar horns that bind / The brows of Iſis caſt a blaze around; / The trembling timbrel made a murm'ring ſound.
  • The images therefore which Laban worſhipped were probably lunar amulets, or types of the ark in the form of a creſcent.
• 3

  Extremely high.

  • Julian wolfed down the rest of his dinner and when he accompanied Michelle back to her apartment his spirits were positively lunar.
  • Although Little Chandler hungers to “express the melancholy of his soul in verse,” to ascend out of the depths of his solitary confinement to the lunar heights of the poet, he can do no more than expand into a garrulous bully or shrink into an infant, always remaining his own inadequate self, like an inflatable ball that changes in size but never in substance.
• 4

  historical(Believed to be) influenced by the Moon, as in character, growth, or properties.

  • Some of the Ancients, and likewiſe diuers of the Moderne VVriters, that haue laboured in Naturall Magick, have noted a Sympathy, between the Sunne, Moone, and ſome Principall Starres; And certaine Herbes, and Plants. And they haue denominated ſome Herbes Solar, and ſome Lunar; [...]
• 5

  obsoletealchemychemistrynatural-sciencesOf or pertaining to silver (which was symbolically associated with the Moon by alchemists).

  • On the Poison of Serpents. By W. Boag, Esq. [...] Supposing the fatal effect [of a snakebite] to be produced by the sudden subtraction of oxygen from the blood, this gentleman recommends, by way of antidote, the employment of those substances which contain oxygen in its greatest abundance, and part with it with the greatest facility; and, as lunar caustic [silver nitrate] possesses these properties in a singular degree, he concludes that no medicine is better calculated to resist the effects of the poison of serpents.
  • The association of the heavenly bodies with known metals and also with human organs and destinies goes back to ancient Chaldea, the land of astrologers. In Chaucer’s words: ‘The seven bodies eek, lo hear anon. Sol gold is, and Luna silver we declare; Mars yron, Mercurie is quyksilver; Saturnian leed; and Jubitur is tyn, and Venus coper, by my fathers kyn.’ […] Corresponding names were bestowed upon salts of these metals by the alchemists, and some of them have persisted down to the present day. Some examples are lunar caustic (silver nitrate); vitriol of Venus (copper sulphate); sugar of Saturn (lead acetate); and vitriol of Mars, or Martial vitriol (ferrous sulphate).
• 6

  astronomynatural-sciencesOf or pertaining to travel through space between the Earth and the Moon, or exploration and scientific investigation of the Moon.

  • Several initial experimental firings of the various stages of Saturn V into earth orbit will precede the planned lunar flight. The astronauts will practice rendezvous techniques in the earth's orbit. [...] Before they reach the moon the astronauts will have another difficult maneuver to perform—turning their command module around so that its nose is attached to the top of the lunar excursion module. Two of the crew members will transfer from the command module to the lunar excursion module.

lunarnoun/ˈluːnə/

• 1

  anatomymedicinesciencesThe middle bone of the proximal series of the carpus in the wrist, which is shaped like a half-moon.

  • The carpal bones are usually described as being capable of being luxated from the lower end of the radius forwards or backwards, inwards or outwards. The case backwards, which has been stated to be the most frequent, is facilitated by the direction of the convex articular surfaces of the scaphoid, lunar, and cuneiform bones, which slope more backwards than forwards.
  • There are two larger bones of the wrist called the scaphoid and lunar; these form a large ball, and this is received into the lower end of the radius.
• 2

  nauticaltransportAn observation of a lunar distance (“the angle between the Moon and another celestial body”), especially for establishing the longitude of a ship at sea.

  • [Y]oung beginners cannot be too often cautioned that a single lunar is of little or no value until the observer knows the usual difference between his lunars taken on opposite sides of the moon; and these should be taken with the same instrument, using the same screens and telescope, for he must remember that they may be expected to differ. My star lunars differ from three to four minutes, or say fifty miles of longitude; my sun lunars from one to two minutes, or say twenty minutes of longitude.
  • With cheap quartz watches (several, for reliability) we can do all the modern celestial navigation we could want. But learning and practicing lunars gives us deeper insight into celestial navigation; an appreciation for their historical importance and difficulty; and perhaps most significant of all, after conquering lunars we can appreciate the great convenience of St. Hilaire sights and modern quartz watches. Moreover, in the rare event of losing UT, with lunars and only a poor watch we can still be confident of finding our longitude at sea (well, OK, to within 30′).