Definition of pax
1
: a tablet decorated with a sacred figure (as of Christ) and sometimes ceremonially kissed by participants at mass
2
: the kiss of peace in the Mass
3
: peace
especially, capitalized
: a period of general stability in international affairs under the influence of dominant military power
—usually used in combination with a latinized name Pax Americana
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Merriam-Webster unabridged
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Time Traveler for pax
The first known use of pax was in the 14th century
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