(US, education) Initialism of end-of-course test.

plural of EOC

(Irish mythology) The king of Ulster prior to the events of the Ulster Cycle in Irish mythology. Father of Ness. He was deposed as High King by Eochaid Feidlech.

(geology) of a geologic epoch within the Paleogene period from about 56 to 34 million years ago.

(geology) the Eocene epoch

(Irish mythology) The High King of Ireland in the Ulster Cycle of Irish mythology, who deposed the former High King Fachtna Fáthach at the battle of Battle of Leitir Ruadh.

(zoology) Any extinct rodent in the family Eocardiidae.

plural of eocardiid

(zoology) Any member of the Eocrinoidea, an extinct class of echinoderms that lived between the Early Cambrian and Late Silurian periods.

plural of eocrinoid