Of, pertaining, or relating to the moon: as, the lunar changes; lunar observations.Situated or moving like the moon; acting as a moon.Measured by the revolutions of the moon: as, lunar months or years.Resembling the moon; round: as, a lunar shield, specifically, in anatomy and zoology:Supposed to be affected by or due to the influence of the moon: as, lunar madness.In anatomy, of or pertaining to the lunare, or semilunar bone of the carpus.Pertaining to silver: from the moon being the alchemical symbol of that metal: as, lunar caustic (nitrate of silver).In navigation, tables for correcting the apparent distance of the moon from the sun, or from a fixed star, on account of refraction and parallax, and for deducing the longitude of the observer from the lunar data given in the almanac.n. In navigation, lunar distance, or an observation for lunar distance: as, to take a lunar.In Arabic gram., a fanciful term applied to the class of consonants before which the l of the article al is not assimilated in pronunciation: so called because including q, the initial of qamar, moon. Opposed to solar.