(medicine, pathology) An epidemic with unusually serious consequences resulting from contact of an infectious and/or contagious agent with a population not previously exposed to it.

Of or relating to Anglicanism or an Anglican church, especially the Scottish Episcopal Church, the Episcopal Church in the United States of America, or the Anglican churches in the Philippines, western Asia, South Sudan, the Horn of Africa, and most of north Africa.

(nonstandard) An adherent of an Anglican church, especially the Scottish Episcopal Church, the Episcopal Church in the United States of America, or the Anglican churches in the Philippines, western Asia, South Sudan, the Horn of Africa, and most of north Africa.

An adherent of an Anglican church, especially the Scottish Episcopal Church, the Episcopal Church in the United States of America, or the Anglican churches in the Philippines, western Asia, South Sudan, the Horn of Africa, and most of north Africa.

(somewhat nonstandard) Of or relating to Anglicanism or an Anglican church, especially the Scottish Episcopal Church, the Episcopal Church in the United States of America, or the Anglican churches in the Philippines, western Asia, South Sudan, the Horn of Africa, and most of north Africa.

The appearance of Jesus Christ to the Magi on the twelfth day after Christmas. / An annual Christian feast celebrating this event.

(US) Initialism of Environmental Protection Agency.

eicosapentaenoic acid / English pale ale / (countable, law, England & Wales) Initialism of enduring power of attorney.

having the characteristics of an epigram / containing or using epigrams

(biochemistry, organic chemistry) A catecholamine hormone and neurotransmitter; as a hormone, secreted by the adrenal gland in response to stress (when it stimulates the autonomic nervous system); as a neurotransmitter, synthesized from norepinephrine.