| ASTROBLEMES | • astroblemes n. Plural of astrobleme. • ASTROBLEME n. the wound left by a meteorite strike. |
| ASTROBOTANY | • astrobotany n. Synonym of xenobotany. • ASTROBOTANY n. the branch of botany that investigates the possibility that plants grow on other planets. |
| ASTROCYTOMA | • astrocytoma n. (Medicine) A cancer of the brain that originates in astrocytes. • ASTROCYTOMA n. a tumour of the central nervous system. |
| ASTROLOGERS | • astrologers n. Plural of astrologer. • ASTROLOGER n. one who affects to tell fortunes from the stars, also ASTROLOGIST. |
| ASTROLOGIES | • astrologies n. Plural of astrology. • ASTROLOGY n. the study of the supposed influence of the movements and positions of the stars and planets. |
| ASTROLOGIST | • astrologist n. One who practices astrology; an astrologer. • ASTROLOGIST n. one who affects to tell fortunes from the stars, also ASTROLOGER. |
| ASTROMETRIC | • astrometric adj. (Astronomy) of or relating to astrometry. • ASTROMETRIC adj. relating to astrometry, also ASTROMETRICAL. |
| ASTRONAUTIC | • astronautic adj. Of or pertaining to astronautics. • ASTRONAUTIC adj. relating to astronautics, also ASTRONAUTICAL. |
| ASTRONOMERS | • astronomers n. Plural of astronomer. • ASTRONOMER n. a person who is skilled in astronomy or who makes observations of celestial phenomena. |
| ASTRONOMIES | • astronomies n. Plural of astronomy. • ASTRONOMY n. the study of the celestial bodies and the heavens in all scientific aspects. |
| ASTRONOMISE | • astronomise v. Alternative form of astronomize. • ASTRONOMISE v. to study astronomy, also ASTRONOMIZE. |
| ASTRONOMIZE | • astronomize v. (Archaic, intransitive) To study or talk astronomy. • ASTRONOMIZE v. to study astronomy, also ASTRONOMISE. |
| ASTROPHOBIA | • astrophobia n. A fear of stars and celestial space. • ASTROPHOBIA n. a morbid fear of thunder and lightning, also ASTRAPHOBIA, ASTRAPOPHOBIA. |
| ASTROPHOBIC | • ASTROPHOBIC adj. suffering from astrophobia, a morbid fear of thunder and lightning, also ASTRAPHOBIC. |
| ASTROSPHERE | • astrosphere n. A cavity filled with hot gas blown into the interstellar medium by stellar winds. • ASTROSPHERE n. another name for a centrosome. |
| ASTROTURFER | • astroturfer n. One who engages in astroturfing, the disguising of an orchestrated campaign as a “grass-roots” event. • ASTROTURFER n. one who engages in ASTROTURFING. |