| natica | <zoology> Any one of numerous species of marine gastropods belonging to Natica, Lunatia, Neverita, and other allied genera (family Naticidae) They burrow beneath the sand, or mud, and drill other shells. Source: Websters Dictionary (01 Mar 1998) |
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| naticoid | <zoology> Like or belonging to Natica, or the family Naticae. Origin: Natica. Source: Websters Dictionary (01 Mar 1998) |
| natiform skull | Palpable bony nodules on the surface of the skull in infants with congenital syphilis. (05 Mar 2000) |
| natimortality | The perinatal death rate; the proportion of foetal and neonatal deaths to the general natality. Origin: L. Natus, birth, + mortalitas, fr. Mors, death (05 Mar 2000) |
| nation | 1. <ethnology> A part, or division, of the people of the earth, distinguished from the rest by common descent, language, or institutions; a race; a stock. "All nations, and kindreds, and people, and tongues." (Rev. Vii. 9) 2. The body of inhabitants of a country, united under an independent government of their own. "A nation is the unity of a people." (Coleridge) "Praise the power that hath made and preserved us a nation." (F. S. Key) 3. Family; lineage. 4. One of the divisions of university students in a classification according to nativity, formerly common in Europe. One of the four divisions (named from the parts of Scotland) in which students were classified according to their nativity. 5. A great number; a great deal; by way of emphasis; as, a nation of herbs. Five nations. See Five. Law of nations. See International law, under International, and Law. Synonym: people, race. See People. Origin: F. Nation, L. Natio nation, race, orig, a being born, fr. Natus, p.p. Of nasci, to be born, for gnatus, gnaci, from the same root as E. Kin. 44. See Kin kindred, and cf. Cognate, Natal, Native. Source: Websters Dictionary (01 Mar 1998) |
| national academy of sciences | A united states organization of distinguished scientists and engineers established for the purpose of investigating and reporting upon any subject of art or science as requested by any department of government. The national research council organised by nas serves as the principal operating agency to stimulate and support research. (12 Dec 1998) |
| National Cancer Information Service | <address, organisation> National Cancer Institute, cancer Information Service, office of Cancer Communications, Building 31, Room 10A24, 9000 Rockville Pike, Bethesda, MD 20892 (27 Sep 1997) |
| national centre for health care technology | A centre in the public health service which coordinates and administers a program of research, demonstrations, and evaluations of medical technologies and assessments of health care technology. (12 Dec 1998) |
| national centre for health statistics | A centre in the public health service which is primarily concerned with the collection, analysis, and dissemination of health statistics on vital events and health activities to reflect the health status of people, health needs, and health resources. (12 Dec 1998) |
| national environmental policy act | A federal law enacted in 1969 that requires all federal agencies to consider and analyse the environmental impacts of any proposed action. NEPA requires an environmental impact statement for major federal actions significantly affecting the quality of the environment. NEPA requires federal agencies to inform and involve the public in the agency's decision making process and to consider the environmental impacts of the agency's decision. (05 Dec 1998) |
| National Formulary | An official compendium formerly issued by the American Pharmaceutical Association but now published by the United States Pharmacopeial Convention for the purpose of providing standards and specifications which can be used to evaluate the quality of pharmaceuticals and therapeutic agents. (05 Mar 2000) |
| national health planning information centre | A centre in the health resources administration division of planning methods and technology which provides access to current information on health planning and resources development. (12 Dec 1998) |
| national health programs | Components of a national health care system which administer specific services, e.g., national health insurance. (12 Dec 1998) |
| national institute for occupational safety and health | An institute of the centres for disease control and prevention which is responsible for assuring safe and healthful working conditions and for developing standards of safety and health. Research activities are carried out pertinent to these goals. (12 Dec 1998) |
| national institute of mental health | A component of the national institutes of health concerned with research, overall planning, promoting, and administering mental health programs and research. (12 Dec 1998) |