Chromatrope :: Chromatrope (n.) An instrument for exhibiting certain chromatic effects of light (depending upon the persistence of vision and mixture of colors) by means of rapidly rotating disks variously colored.
Chromatrope :: Chromatrope (n.) A device in a magic lantern or stereopticon to produce kaleidoscopic effects.
Homatropine :: Homatropine (n.) An alkaloid, prepared from atropine, and from other sources. It is chemically related to atropine, and is used for the same purpose..
Matron :: Matron (n.) A wife or a widow, especially, one who has borne children; a woman of staid or motherly manners..
Matron :: Matron (n.) A housekeeper; esp., a woman who manages the domestic economy of a public instution; a head nurse in a hospital; as, the matron of a school or hospital..
Matross :: Matross (n.) Formerly, in the British service, a gunner or a gunner's mate; one of the soldiers in a train of artillery, who assisted the gunners in loading, firing, and sponging the guns..
Sematrope :: Sematrope (n.) An instrument for signaling by reflecting the rays of the sun in different directions.
Thaumatrope :: Thaumatrope (n.) An optical instrument or toy for showing the presistence of an impression upon the eyes after the luminous object is withdrawn.