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Definitions of co
With; together See COM-. Co is often joined to purely English words; as, comate, copartner, corespondent (distinguished from correspondent). The Concise Standard Dictionary of the English Language. By James Champlin Fernald. Published 1919.
a heavy odorless colorless gas formed during respiration and by the decomposition of organic substances; absorbed from the air by plants in photosynthesis Scrapingweb Dictionary DB
an odorless very poisonous gas that is a product of incomplete combustion of carbon Scrapingweb Dictionary DB
a state in west central United States in the Rocky Mountains Scrapingweb Dictionary DB
one who refuses to serve in the armed forces on grounds of conscience Scrapingweb Dictionary DB
A prefix of Latin origin; ao abbreviation for company. See Con. Nuttall's Standard dictionary of the English language. By Nuttall, P.Austin. Published 1914.
A form of the prefix con, and means, with; together; together with; co is used before a vowel and h, as coalesce, cohabit, and is often separated from the word by a hyphen, as co-operate, co-partner; in math., co is an abbreviation of complement, as co-latitude, co-sine, co-tangent. Note.-The prefix con assumes the various forms of co, cog, col, com, cor, according to the first letter of the second element of the compound; but, 1, con becomes com before b and p, as combustion, compel; 2, con is retained before j and v, except in comfort, as conflict, convene; 3, con is retained before t, d, q, g, and s, as content, condole, conquest, congeal, consent. Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.