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Nepos, Cornelius

(Encyclopedia)Nepos, Cornelius nēˈpŏs [key], c.100 b.c.–c.25 b.c., Roman historian. He was an intimate friend of Pomponius Atticus, Cicero, and Catullus. His only extant work is a collection of biographies, mo...

Neptune, in astronomy

(Encyclopedia)Neptune, in astronomy, 8th planet from the sun at a mean distance of about 2.8 billion mi (4.5 billion km) with an orbit lying between those of Uranus and the dwarf planet Pluto; its period of revolut...

Neptune, in Roman religion and mythology

(Encyclopedia)Neptune, in Roman religion and mythology, god of water. He was presumably an indigenous god of fertility, but in later times he was identified with the Greek Poseidon, god of the sea. At his festival,...

neptunium

(Encyclopedia)neptunium nĕpto͞oˈnēəm [key], radioactive chemical element; symbol Np; at. no. 93; mass number of most stable isotope 237; m.p. about 640℃; b.p. 3,902℃ (estimated); sp. gr. 20.25 at 20℃; va...

Nergal

(Encyclopedia)Nergal nŭrˈgäl, –gəl [key], ancient deity worshiped in Babylonia and Assyria. He was a god of the midsummer sun, of war, of the chase, and of the dead. He could be beneficent, but he was primari...

Nero

(Encyclopedia)Nero (Nero Claudius Caesar) nērˈō [key], a.d. 37–a.d. 68, Roman emperor (a.d. 54–a.d. 68). He was originally named Lucius Domitius Ahenobarbus and was the son of Cnaeus Domitius Ahenobarbus (co...

nerve gas

(Encyclopedia)nerve gas, any of several poison gases intended for military use, e.g., tabun, sarin, soman, and VX. Nerve gases were first developed by Germany during World War II but were not used at that time. The...

Nervo, Amado

(Encyclopedia)Nervo, Amado ämäˈᵺō nārˈvō [key], 1870–1919, Mexican poet. Known as the “monk of poetry,” he studied for the priesthood but abandoned it for writing. An intimate friend of Rubén Darío...

nervous system

(Encyclopedia)CE5 Nerve cell CE5 Nervous system nervous system, network of specialized tissue that controls actions and reactions of the body and its adjustment to the environment. Virtually all members of ...

Nesbit, E.

(Encyclopedia)Nesbit, E. (Edith Nesbit), 1858–1924, English author of children's books, adult novels, and poetry. A socialist and cofounder of the Fellowship of the New Life, out of which grew the Fabian Society,...