The Collaborative International Dictionary of English v.0.48:

Astral \As"tral\, a. [L. astralis, fr. astrum star, Gr. ?: cf.
   F. astral. See Star.]
   1. Pertaining to, coming from, or resembling, the stars;
      starry; starlike.
      [1913 Webster]

            Shines only with an astral luster.    --I. Taylor.
      [1913 Webster]

            Some astral forms I must invoke by prayer. --Dryden.
      [1913 Webster]

   2. (Biol.) Of or pertaining to an aster; as, astral rays;
      astral sphere.
      [Webster 1913 Suppl.]

   3. (Theosophy) Consisting of, belonging to, or designating, a
      kind of supersensible substance alleged to be next above
      the tangible world in refinement; as, astral spirits;
      astral bodies of persons; astral current; the astral
      plane.
      [Webster 1913 Suppl. +PJC]

   Astral lamp, an Argand lamp so constructed that no shadow
      is cast upon the table by the flattened ring-shaped
      reservoir in which the oil is contained.

   Astral spirits, spirits formerly supposed to live in the
      heavenly bodies or the a["e]rial regions, and represented
      in the Middle Ages as fallen angels, spirits of the dead,
      or spirits originating in fire.
      [1913 Webster]

WordNet (r) 3.0 (2006):

astral
    adj 1: being or relating to or resembling or emanating from
           stars; "an astral body"; "stellar light" [syn: stellar,
           astral]

Moby Thesaurus II by Grady Ward, 1.0:

162 Moby Thesaurus words for "astral":
   Buddhic body, Cynthian, Masan, airy, anagalactic, apparition,
   appearance, asomatous, asteroidal, astral body, astral spirit,
   astrologic, astrologistic, astrologous, astronomic, astrophysical,
   banshee, bliss body, bodiless, causal body, celestial,
   circumplanetary, cislunar, control, daydreaming, daydreamy,
   decarnate, decarnated, departed spirit, design body, discarnate,
   disembodied, disembodied spirit, duppy, dybbuk, ectoplasmic,
   eidolon, empyreal, empyrean, equinoctial, ethereal, etheric,
   etheric body, extragalactic, extramundane, form, galactic, ghost,
   ghostish, ghostlike, ghostly, ghosty, grateful dead, guide, hant,
   haunt, heavenly, heliacal, highest, highest-ranking, idolum,
   immaterial, immateriality, impalpable, imponderable, incorporate,
   incorporeal, incorporeal being, incorporeity, insubstantial,
   intangible, intercosmic, interplanetary, intersidereal,
   interstellar, kamarupa, kamic body, larva, lemures, linga sharira,
   lunar, lunary, lunate, lunular, lunulate, manes, materialization,
   meteoric, meteoritic, mind body, nebular, nebulose, nebulous,
   nonmaterial, nonphysical, occult, oni, otherworldly, phantasm,
   phantasma, phantasmal, phantasmic, phantom, phantomic, phantomlike,
   planetal, planetarian, planetary, planetesimal, poltergeist,
   presence, psychic, revenant, semilunar, shade, shadow, shadowy,
   shape, shrouded spirit, sidereal, solar, soul body, specter,
   specterlike, spectral, spectral ghost, sphery, spirit, spiritual,
   spiritual body, spook, sprite, star-spangled, star-studded, starry,
   stellar, stellary, subtle body, supernatural, terrestrial,
   theophany, top-drawer, transmundane, unearthly, unembodied,
   unextended, unfleshly, unphysical, unsubstantial, unsubstantiality,
   unworldly, uranic, vision, visionary, vital body, walking dead man,
   wandering soul, wraith, wraithlike, wraithy, zodiacal, zombie



V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

ASTRAL
       Alliance fuer Strategic Token Ring Advancement and Leadership
(manufacturer)


The Free On-line Dictionary of Computing (30 December 2018):

Astral

    A programming language based on Pascal, never
   implemented.

   ["ASTRAL: A Structured and Unified Approach to Database Design
   and Manipulation", T. Amble et al, in Proc of the Database
   Architecture Conf, Venice, June 1979].

   (2000-01-27)