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11 definitions found
 for CO
From The Collaborative International Dictionary of English v.0.48 :

  Ketone \Ke"tone\ (k[=e]"t[=o]n), n. [Cf. Acetone.] (Chem.)
     One of a large class of organic substances resembling the
     aldehydes, obtained by the distillation of certain salts of
     organic acids and consisting of carbonyl ({CO) united with
     two hydrocarbon radicals. In general the ketones are
     colorless volatile liquids having a pungent ethereal odor.
     [1913 Webster]
     Note: The ketones are named by adding the suffix-one to the
           stems of the organic acids from which they are
           respectively derived; thus, acetic acid gives acetone;
           butyric acid, butyrone, etc.
           [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 :

  Acyl \Ac"yl\, n. [Acid + -yl.] (Org. Chem.)
     An acid radical, as acetyl, malonyl, or benzoyl. An acyl
     radical can be depicted as R-CO-, where -CO- is the
     carbonyl group, and R is the group that characterizes the
     acyl moiety.
     [Webster 1913 Suppl. +PJC]

From The Collaborative International Dictionary of English v.0.48 :

  Carbonic \Car*bon"ic\, a. [Cf. F. carbonique. See Carbon.]
     Of, pertaining to, or obtained from, carbon; as, carbonic
     [1913 Webster]
     Carbonic acid (Chem.), an acid HO.CO.OH, not existing
        separately, which, combined with positive or basic atoms
        or radicals, forms carbonates. In common language the term
        is very generally applied to a compound of carbon and
        oxygen, CO2, more correctly called carbon dioxide. It
        is a colorless, heavy, irrespirable gas, extinguishing
        flame, and when breathed destroys life. It can be reduced
        to a liquid and solid form by intense pressure. It is
        produced in the fermentation of liquors, and by the
        combustion and decomposition of organic substances, or
        other substances containing carbon. It is formed in the
        explosion of fire damp in mines, and is hence called
        after damp; it is also know as choke damp, and
        mephitic air. Water will absorb its own volume of it,
        and more than this under pressure, and in this state
        becomes the common soda water of the shops, and the
        carbonated water of natural springs. Combined with lime it
        constitutes limestone, or common marble and chalk. Plants
        imbibe it for their nutrition and growth, the carbon being
        retained and the oxygen given out.
     Carbonic oxide (Chem.), a colorless gas, CO, of a light
        odor, called more correctly carbon monoxide. It is
        almost the only definitely known compound in which carbon
        seems to be divalent. It is a product of the incomplete
        combustion of carbon, and is an abundant constituent of
        water gas. It is fatal to animal life, extinguishes
        combustion, and burns with a pale blue flame, forming
        carbon dioxide.
        [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 :

  Carbonyl \Car"bon*yl\, n. [Carbon + -yl.] (Chem.)
     The radical ({=CO), occuring, always combined, in many
     compounds, as the aldehydes, the ketones, urea, carbonyl
     chloride, etc.
     [1913 Webster]
     Note: Though denoted by a formula identical with that of
           carbon monoxide, it is chemically distinct, as carbon
           seems to be divalent in carbon monoxide, but
           tetravalent in carbonyl compounds.
           [1913 Webster]
     Carbonyl chloride (Chem.), a colorless gas, COCl2, of
        offensive odor, and easily condensable to liquid. It is
        formed from chlorine and carbon monoxide, under the
        influence of light, and hence has been called phosgene,
        or phosgene gas; -- called also carbon oxychloride. It
        is used in chemical synthesis, and was also used as a
        poison gas in World War I.
        [1913 Webster +PJC]

From The Collaborative International Dictionary of English v.0.48 :

  Co \Co\ n.
     the chemical formula for cobalt, a ferromagnetic metal of
     atomic number 27.
     Syn: cobalt, atomic number 27.
          [WordNet 1.5]

From The Collaborative International Dictionary of English v.0.48 :

  Co- \Co-\ (k[-o]-).
     A form of the prefix com-, signifying with, together, in
     conjunction, joint. It is used before vowels and some
     consonants. See Com-.
     [1913 Webster]

From WordNet (r) 3.0 (2006) :

      n 1: an odorless very poisonous gas that is a product of
           incomplete combustion of carbon [syn: carbon monoxide,
           carbon monoxide gas, CO]
      2: a hard ferromagnetic silver-white bivalent or trivalent
         metallic element; a trace element in plant and animal
         nutrition [syn: cobalt, Co, atomic number 27]
      3: one who refuses to serve in the armed forces on grounds of
         conscience [syn: conscientious objector, CO]
      4: a state in west central United States in the Rocky Mountains
         [syn: Colorado, Centennial State, CO]

From V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016) :

         Connection Oriented (CL)

From V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016) :

         Check Out (RCS)

From The Free On-line Dictionary of Computing (30 December 2018) :

      The country code for Colombia.

From Bouvier's Law Dictionary, Revised 6th Ed (1856) :

  CO. A prefix or particle in the nature of an inseparable proposition, 
  signifying with or in conjunction. Con and the Latin cum are equivalent, as, 
  co-executors, co-obligor. It is also used as an abbreviation for company as, 
  John Smith & Co. 

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