1.Definition: a Mid-Atlantic state; one of the original 13 colonies

Related Noun(s):keystone state, pennsylvania

Category: Places

2.Definition: a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead

Related Noun(s):protactinium, protoactinium

Category: General

3.Definition: a unit of pressure equal to one newton per square meter

Related Noun(s):pascal

Category: General

4.Definition: an electronic amplification system used as a communication system in public areas

Category: Objects

5.Definition: an informal term for a father; probably derived from baby talk

Related Noun(s):dad, dada, daddy, papa, pappa, pop

Category: People