moderator water

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• moderator — [mäd′ər āt΄ər] n. [ME moderatour < L moderator] a person or thing that moderates; specif., a) a person who presides at a town meeting, debate, assembly, etc. b) the presiding officer of a governing body, as of the Presbyterian Church c) a… …   English World dictionary

• Water — This article is about general aspects of water. For a detailed discussion of its properties, see Properties of water. For other uses, see Water (disambiguation) …   Wikipedia

• Water (molecule) — Chembox new Name = Water (H2O) ImageFileL1 = Water 2D labelled.png ImageSizeL1 = 120px ImageNameL1 = The water molecule has this basic geometric structure ImageFileR1 = Water molecule 3D.svg ImageSizeR1 = 100px ImageNameR1 = Space filling model… …   Wikipedia

• water — waterer, n. waterless, adj. waterlessly, adv. waterlessness, n. waterlike, adj. /waw teuhr, wot euhr/, n. 1. a transparent, odorless, tasteless liquid, a compound of hydrogen and oxygen, H2O, freezing at 32°F or 0°C and boiling at 212°F or 100°C …   Universalium

• water — 1. H2O; a clear, odorless, tasteless liquid, solidifying at 32°F (0°C, 0°R), and boiling at 212°F (100°C, 80°R), that is present in all animal and vegetable tissues and dissolves more substances than any other liquid. See volume. 2. Euphemism for …   Medical dictionary

• moderator — moderatorial /mod euhr euh tawr ee euhl, tohr /, adj. moderatorship, n. /mod euh ray teuhr/, n. 1. a person or thing that moderates. 2. a person who presides over a panel discussion on radio or television. 3. a presiding officer, as at a public… …   Universalium

• Moderator —   A material, such as ordinary water, heavy water, or graphite, used in a reactor to slow down high velocity neutrons, thus increasing the likelihood of further fission.   U.S. Dept. of Energy, Energy Information Administration s Energy Glossary …   Energy terms

• moderator — mod·er·a·tor mäd ə .rāt ər n a substance (as graphite, deuterium in heavy water, or beryllium) used for slowing down neutrons in a nuclear reactor …   Medical dictionary

• moderator — mod•er•a•tor [[t]ˈmɒd əˌreɪ tər[/t]] n. 1) a person or thing that moderates 2) sbz a person who presides over a group event or meeting 3) phs a substance, as graphite or heavy water, used to slow neutrons to speeds at which they are more… …   From formal English to slang

• moderator — /ˈmɒdəreɪtə / (say moduhraytuh) noun 1. someone or something that moderates. 2. a presiding officer, as over a public forum, a legislative body, or an ecclesiastical body in the Presbyterian and Uniting Churches. 3. Physics a substance, such as… …  

• Neutron moderator — Currently operating nuclear power reactors by moderator Moderator Reactors Design Country none (fast) 1 BN 600 Russia (1) graphite 29 AGR, Magnox, RBMK United Kingdom (18), Russia (11) heavy water 29 CANDU …   Wikipedia