| 1. |
(noun) a unit of pressure equal to one newton per square meter |
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Synonyms: pascal |
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Related Words: pressure unit |
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| 2. |
(noun) an electronic amplification system used for communication in public areas |
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Synonyms: PA system, public address system |
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Related Words: communication system |
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| 3. |
(noun) a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead |
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Synonyms: atomic number 91, protactinium, protoactinium |
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Related Words: metal, metallic element |
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| 4. |
(noun) an informal term for a father; probably derived from baby talk |
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Synonyms: dad, dada, daddy, old man, papa, pappa, pater, pop |
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Related Words: begetter, father, male parent |
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