“Carbon dioxide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/carbon%20dioxide. A compound made up of molecules containing one carbon atom and two oxygen atoms. Carbon dioxide (CO 2) is a chemical compound.It is a gas at room temperature.It is made of one carbon and two oxygen atoms.People and animals release carbon dioxide when they breathe out. Under all conditions found naturally on Earth, CO2 is an invisible, odorless gas. Published by Houghton Mifflin Company. And if the buses are fueled with biodiesel, carbon-dioxide emissions would be cut by 90 percent. The American Heritage® Science Dictionary “Affect” vs. “Effect”: Use The Correct Word Every Time. At higher concentrations it has a sharp, acidic odor. Send us feedback. Depressions in the carbon-dioxide snow where the hundred-foot pad-feet of ships' landing-legs had pressed down. Carbon dioxide is also given off in the burning of. It is an integral part of the carbon cycle, a biogeochemical cycle in which carbon is exchanged between the Earth's oceans, soil, rocks and the biosphere. 2) is an important trace gas in Earth's atmosphere. Learn more. At low concentrations, the gas is odorless. Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Carbon dioxide is a colourless, odourless gas and is one of the chief waste products of tissue metabolism. Carbon monoxide burns in the air with a blue flame, forming carbon dioxide. Its chemical formula is CO 2. carbon dioxide meaning: 1. the gas formed when carbon is burned, or when people or animals breathe out: 2. the gas formed…. Carbon dioxide makes up about 0.03 percent of the air. Formula: CO. A colorless, odorless, incombustible gas formed during respiration, combustion, and organic decomposition and used in inert atmospheres, fire extinguishers, and aerosols. Carbon monoxide burns in the air with a blue flame, forming carbon dioxide. The carbon dioxide definition is far more simple than its environmental implications would have you think. A CO2 blood test measures the amount of carbon dioxide in your blood. How Do You Spell Chanukah (Or Is It Hanukkah)? Please tell us where you read or heard it (including the quote, if possible). What made you want to look up carbon dioxide? What Is An Em Dash And How Do You Use It? Which of the following words shares a root with. Carbon dioxide is a colorless, odorless gas formed during respiration, the decomposition and combustion of organic compounds, and in the reaction of acids with carbonates. Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012. It is naturally present in air (about 0.03 per cent) and is absorbed by plants in photosynthesis. For example, the global warming potential for methane over 100 years is 21. The American Heritage® Stedman's Medical Dictionary Volvo Tests Ultra-Efficient Plug-in Hybrid-Electric Diesel Bus. Copyright © 2011. The current concentration is about 0.04% (412 ppm) by volume, having risen from pre-industrial levels of 280 ppm. Carbon dioxide formed during respiration is excreted by the lungs. Each molecule of carbon dioxide consists of one atom of carbon and two atoms of oxygen. Carbon dioxide: A gas which is the byproduct of cellular metabolism and which collects in the tissues, is cleared from the tissues by the blood within the veins, is carried by the hemoglobin in the red blood cells, and removed from the body via the lungs in the exhaled air. Test Your Knowledge - and learn some interesting things along the way. Definition of carbon dioxide : a heavy colorless gas CO2 that does not support combustion, dissolves in water to form carbonic acid, is formed especially in animal respiration and in the decay or combustion of animal and vegetable matter, is absorbed from the air by plants in photosynthesis, and is used in the carbonation of beverages “Crow” vs. “Raven”: Do You Know The Difference? Published by Houghton Mifflin Harcourt Publishing Company. Delivered to your inbox! carbon dioxide - a heavy odorless colorless gas formed during respiration and by the decomposition of organic substances; absorbed from the air by plants in photosynthesis carbonic acid gas , CO2 blackdamp , chokedamp - the atmosphere in a mine following an explosion; high in carbon dioxide and incapable of supporting life A colorless gas, carbon dioxide has a faint, sharp odor and a slightly sour taste. All rights reserved. Global warming - Global warming - Carbon dioxide: Of the greenhouse gases, carbon dioxide (CO2) is the most significant. Why Do “Left” And “Right” Mean Liberal And Conservative? Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Definition: Carbon dioxide equivalent is a measure used to compare the emissions from various greenhouse gases based upon their global warming potential. They contained a carbon-dioxide cartridge and could be inflated simply by squeezing them, which punctured the cartridge. Definition of ***carbon dioxide in the Definitions.net dictionary. Carbon dioxide is colorless. It is a waste product made by your body. Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005. If your language skills aren’t already top-notch, then this vocab quiz can get you up to speed! © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Describe 2020 In Just One Word? A carbon dioxide (CO 2) fire extinguisher is a portable, active fire protection device that works by expelling carbon dioxide onto a fire.It works by displacing the oxygen the fire relies upon to continue burning, and it is primarily used to extinguish fires in which the source of the fuel is … Michael Alberty | For The Oregonian/oregonlive, We Got You This Article on 'Gift' vs. 'Present'. 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