13 definitions found for PO

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]

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

po abbreviation Etymology: Latin per os by mouth; orally

PO abbreviation 1. petty officer 2. postal order 3. post office 4. purchase order

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

Po
symb. Chem. the element polonium.

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

PO also P.O. PO is an abbreviation for Post Office or postal order.

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

Po symb. Chem. the element polonium.

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

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.

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