(Irish mythology) A member of the conspiracy that killed Cúchulainn, but was killed by his second cousin Conall the Victorious. Son of Cairbre Nia Fer and brother of Achall.

(telephony) Initialism of easily-recognizable code. / (finance) Initialism of early repayment charge. / (education) Initialism of early career researcher.

Initialism of Emacs Relay Chat. / Initialism of European Rugby Cup. / Initialism of European Rally Championship. / Initialism of Esquerra Republicana de Catalunya.

Initialism of emissions reduction currency system. / (medicine) Initialism of elective repeat cesarean section.

(military) Initialism of Emergency Rocket Communications System. / Initialism of Ethiopian Red Cross Society. / (computing) Initialism of Extended Reference Concrete Syntax.

plural of ERC

vitamin D2

A dihydroxy- derivative of vitamin D2 that occurs in some plants.

(mineralogy) An orthorhombic-dipyramidal mineral containing calcium, hydrogen, iron, manganese, oxygen, phosphorus, and sodium.

(medicine) Initialism of endoscopic retrograde cholangiopancreatography.