Definition of ex post facto in English:

ex post facto

Syllabification: ex post fac·to
Pronunciation: /ˌeks pōst ˈfaktō

adjective & adverb

With retroactive effect or force: [as adjective]: ex post facto laws


erroneous division of Latin ex postfacto 'in the light of subsequent events'.

Definition of ex post facto in:

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Pronunciation: niːˈɒt(ə)ni
retention of juvenile features in the adult animal