(Adam), minister to the duke of Holstein, and secretary to the embassy sent in 1633 to the great duke of Muscovy and to the king of Persia. He spent five years in this employment; and, on his return, published a relation of his journeys, with maps and figures, at Silesia, 1656, in folio. He wrote an Abridgement of the Chronicles of Holstein from 1448 to 1663; and was appointed librarian to the duke of Holstein, in which capacity he probably died. He has the character of an able mathematician, an adept Olearius of music, and a good orientalist, especially in the Persian language.

Olearius (Godfrey), son of Godfrey Olearius, D.D. superintendant of Halle in Saxony, was born there in 1639. He became professor of Greek at Leipzig; and showed his abilities in that language by 52 exercitations on the dominical epistles, and upon those parts of the epistles in the New Testament which are read in the public exercises, and which among the Lutherans are the subject of part of their sermons. He discharged the most important polls in the university, and among other dignities was ten times rector of it. His learning and industry were displayed in 106 theological disputations, 61 in philosophy, some programs upon difficult points, several speeches and theological councils; which make two thick volumes: beside his Moral Theology, his introduction to Theology, which treats of cases of conscience, and his Hermeneutica Sacra. He lived to a good old age, dying in 1713. His eldest son of his own name was a man of genius and learning, a professor in the same university, who published several works, but died young of consumption before his father.

Olecranonum, or Olecranon, in anatomy, the protuberance of the ulna, which prevents the joint of the elbow from being bent back beyond a certain length. See Anatomy, no 51.