Pa

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead
• Syn:
protactinium, protoactinium, atomic number 91
• Hypernyms:
metallic element, metal
2. a unit of pressure equal to one newton per square meter
• Syn:
pascal
• Hypernyms:
pressure unit

• Từ đồng nghĩa / Synonyms:
  public address system, P.A. system, PA system, P.A., PA, Pennsylvania, Keystone State, pascal, Pa, protactinium, protoactinium, atomic number 91, dad, dada, daddy, papa, pappa, pop