Astronomer :: Astronomer (n.) One who is versed in astronomy; one who has a knowledge of the laws of the heavenly orbs, or the principles by which their motions are regulated, with their various phenomena..
Astronomy :: Astronomy (n.) The science which treats of the celestial bodies, of their magnitudes, motions, distances, periods of revolution, eclipses, constitution, physical condition, and of the causes of their various phenomena..
Astronomy :: Astronomy (n.) A treatise on, or text-book of, the science..
Entoplastron :: Entoplastron (n.) The median plate of the plastron of turtles; -- called also entosternum.
Epiplastron :: Epiplastron (n.) One of the first pair of lateral plates in the plastron of turtles.
Hyopastron :: Hyopastron (n.) The second lateral plate in the plastron of turtles; -- called also hyosternum.
Hypoplastron :: Hypoplastron (n.) The third lateral plate in the plastron of turtles; -- called also hyposternum.
Periastron :: Periastron (n.) That point, in the real or apparent orbit of one star revolving around another, at which the former is nearest to the latter..
Plastron :: Plastron (n.) A piece of leather stuffed or padded, worn by fencers to protect the breast..
Plastron :: Plastron (n.) An iron breastplate, worn under the hauberk..
Plastron :: Plastron (n.) The ventral shield or shell of tortoises and turtles. See Testudinata.
Plastron :: Plastron (n.) A trimming for the front of a woman's dress, made of a different material, and narrowing from the shoulders to the waist..
Strond :: Stromeyerite (n.) A steel-gray mineral of metallic luster. It is a sulphide of silver and copper.