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13 definitions found for PO

WordNet (r) 3.0
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, Po, atomic number 84] 2: a noncommissioned officer in the Navy or Coast Guard with a rank comparable to sergeant in the Army [syn: petty officer, PO, P.O.] 3: a European river; flows into the Adriatic Sea [syn: Po, 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, PO]

Merriam-Webster's Collegiate Dictionary, 11th Edition (2003)
Po I. symbol polonium II. geographical name or ancient Padus river 405 miles (652 kilometers) N Italy flowing from slopes of Mt. Viso E into the Adriatic through several mouths

Merriam-Webster's Collegiate Dictionary, 11th Edition (2003)
po abbreviation Etymology: Latin per os by mouth; orally

Merriam-Webster's Collegiate Dictionary, 11th Edition (2003)
PO abbreviation 1. petty officer 2. postal order 3. post office 4. purchase order

Oxford English Reference Dictionary
PO
abbr.
1 Post Office.
2 postal order.
3 Petty Officer.
4 Pilot Officer.

Oxford English Reference Dictionary
Po
symb. Chem. the element polonium.

Oxford English Reference Dictionary
po
n. (pl. pos) Brit. colloq. a chamber-pot.

Collins COBUILD Advanced Learner's English Dictionary
PO also P.O. PO is an abbreviation for Post Office or postal order.

English Explanatory Dictionary
PO abbr. 1 Post Office. 2 postal order. 3 Petty Officer. 4 Pilot Officer.

English Explanatory Dictionary
Po symb. Chem. the element polonium.

English Explanatory Dictionary
po n. (pl. pos) Brit. colloq. a chamber-pot.

The Nuttall Encyclopaedia (1907)
Po the largest river in Italy, rises 6000 ft. above sea-level in the Cottian Alps, and after 20 m. of rocky defiles emerges on the great Lombardy plain, which it crosses from W. to E., receiving the Ticino, Adda, Mincio, and Trebbia, tributaries, and enters the Adriatic by a rapidly growing delta. Its total course is 360 m.; the width and volume of its stream make it difficult to cross and so a protection to all Italy. The chief towns on its banks are Turin, Piacenza, and Cremona.

Webster's Revised Unabridged Dictionary (1913)
Phosphoryl Phos"phor*yl, n. [Phosphorus + -yl.] (Chem.) The radical PO, regarded as the typical nucleus of certain compounds.




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