Post obitum (ob´it-um).—After death. An undertaking given to a usurer to repay a loan on the death of a relative, from whom money is expected, is called a post obit.

Post tenebras lux (ten´e-bras).—After darkness comes light.

Postulata (post-u-lā´ta).—Things demanded.

Prima facie (prī´mā fā´si-ē).—On the first view or appearance. A legal term frequently employed to denote that on the evidence already given there is a good case for further investigation.

Primum mobile (prī´mum mō´bil-e).—The source of motion: the mainspring.

Primus inter omnes (prī´mus in´ter om´nēs).—The first among all.

Primus inter pares (par´ēs).—The first among his equals or peers: e. g., an archbishop among bishops.

Principia, non homines (prin-sip´i-a non hom´in-ēs).—Principles, not men.

Principiis obsta (prin-sip´i-īs ob´sta).—Withstand the beginnings (i. e. of evil).

Pro aris et focis (ar´is et fō´sīs).—For our altars and our hearths.