1. [ noun ] an informal term for a father; probably derived from baby talk
Synonyms: papa dad daddy pop old_man pater pappa dada
Related terms: father
2. [ noun ] (chemistry) a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead
Synonyms: protoactinium atomic_number_91 protactinium
Related terms: metallic_element
3. [ noun ] (physics) a unit of pressure equal to one newton per square meter
Synonyms: pascal
Related terms: pressure_unit
4. [ noun ] (government,geography) a Mid-Atlantic state; one of the original 13 colonies
Synonyms: Pennsylvania Keystone_State
Related terms: American_state Mid-Atlantic_states Philadelphia Pittsburgh Susquehanna Harrisburg bethlehem penn allentown altoona gettysburg erie monongahela allegheny Chester lehigh_river Gettysburg
5. [ noun ] Woman's first name, popularity rank in the U.S. is 3244
6. [ noun ] an electronic amplification system used as a communication system in public areas
Synonyms: PA_system p.a._system p.a. public_address_system
Related terms: communication_system loudspeaker amplifier tannoy
Similar spelling:   Pay