P.O.

3 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Phosphoryl \Phos"phor*yl\ (f[o^]s"f[o^]r*[i^]l), n. [Phosphorus
     + -yl.] (Chem.)
     The radical {PO}, regarded as the typical nucleus of certain
     compounds.
     [1913 Webster]



From WordNet (r) 2.0 [wn]:

  P.O.
       n : a noncommissioned officer in the navy with a rank comparable
           to sergeant in the army [syn: {petty officer}, {PO}]

From WordNet (r) 2.0 [wn]:

  Po
       n 1: a radioactive metallic element that is similar to tellurium
            and bismuth; occurs in uranium ores but can be produced
            by bombarding bismuth with neutrons in a nuclear reactor
            [syn: {polonium}, {atomic number 84}]
       2: a noncommissioned officer in the navy with a rank comparable
          to sergeant in the army [syn: {petty officer}, {P.O.}]
       3: a European river; flows into the Adriatic Sea [syn: {Po
          River}]
       4: an independent agency of the federal government responsible
          for mail delivery (and sometimes telecommunications)
          between individuals and businesses in the United States
          [syn: {United States Post Office}, {US Post Office}, {Post
          Office}]