nineteenth

. [A. S. nigonteodha.] A. As adj.: The ordinal of nineteen; following the eighteenth, and preceding the twentieth. B. As substantive: I. Ordinary Language: 1. The number, person, or thing next in order after the eighteenth. 2. The quotient of unity divided by nineteen; one of nineteen equal parts. II. Music : An interval consisting of two octaves and a fifth. nine-ti-eth, a. & 8. [NINETY.] Ni-ô-bē, s . [Gr.] 1. Greek Mythol .: The daughter of Tantalus, and one of the Pleiades, married to Amphion, king of Thebes. Proud of her numerous and flourishing offspring, she provoked the anger of Apollo and Diana, who slew them all. She was herself changed by Jupiter into a rock in Phrygia, from which a rivulet, fed by her tears, continually pours. 2. Astron.: [ASTEROID, 71.] 3. A genus of Trilobites, family Asaphidæ, from the Upper Cam brian. It is an early form of the family, and intermediate between Asaphus and Ogygia (q. v.). The Niobe of Nations : Rome. "The Niobe of Nations , there she stands, Childle and crownle in her voicele woe; An empty urn within her withered hands, Whose dust was scattered to the ages long ago." Byron: C. Harold , iv. 19. Ni-o-be-an, a. [Eng. Niobe ; -an.] Of or pertaining to Niobe. ni-o-bic, a. [Eng., ., niob (ium); -ic.] Derived from or contained in Niobium (q. v.). niobic-oxide, s. Chem.: NbO2. Occurs naturally as euxenite, and is formed artificially by decomposing the chloride with water.