pa

[ pah, paw ]
/ pɑ, pɔ /

noun Informal.

Origin of pa

short for papa

Words nearby pa

Definition for pa (2 of 8)

Pa

Physics.

pascal; pascals.

Definition for pa (3 of 8)

Pa

Symbol, Chemistry.

Definition for pa (4 of 8)

PA

Parents' Association.
paying agent.
Pennsylvania (approved especially for use with zip code).
physician's assistant.
press agent.
public-address system.

Definition for pa (5 of 8)

Definition for pa (6 of 8)

P.A.

Definition for pa (7 of 8)

p.-a.

public-address system.

Definition for pa (8 of 8)

p.a.

participial adjective.
per annum.
press agent.

Example sentences from the Web for pa

British Dictionary definitions for pa (1 of 7)

pa 1
/ (pɑː) /

noun

an informal word for father

British Dictionary definitions for pa (2 of 7)

pa 2

pah

/ (pɑː) /

noun NZ

a Māori village or settlement
history a Māori defensive position and settlement on a hilltop
go back to the pa to abandon city life in favour of rural life

Word Origin for pa

Māori

British Dictionary definitions for pa (3 of 7)

pa 3

the internet domain name for

Panama

British Dictionary definitions for pa (4 of 7)

Pa

the chemical symbol for

protactinium

symbol for

pascal

British Dictionary definitions for pa (5 of 7)

PA

abbreviation for

British Dictionary definitions for pa (6 of 7)

Pa.

abbreviation for

Pennsylvania

British Dictionary definitions for pa (7 of 7)

p.a.

abbreviation for

per annum

Word Origin for p.a.

Latin: yearly

Medical definitions for pa (1 of 2)

Pa

The symbol for the elementprotactinium

Medical definitions for pa (2 of 2)

PA

abbr.

physician's assistant
posteroanterior
pulmonary artery

Scientific definitions for pa (1 of 2)

Pa

Abbreviation of pascal
The symbol for protactinium.

Scientific definitions for pa (2 of 2)

protactinium
[ prō′tăk-tĭnē-əm ]

Pa

A rare, extremely toxic, radioactive metallic element of the actinide series that occurs in uranium ores. It has 13 known isotopes, the most stable of which is protactinium 231 with a half-life of 32,760 years. Atomic number 91; approximate melting point 1,550°C; specific gravity 15.37; valence 4, 5. See Periodic Table.