onium, or seonium

[Latinised form of Gr. αἰώνιον ( αἰδηίοn ), n. of adj. αἰώνιος ( aiōnios )=lasting, eternal.] Named from their tenacity of life. A genus of plants belonging to the order Cra ulaceæ, or House-leeks. Æ. Eolian-aërial arboreum, the tree house-leek, a garden plant, is thickly laden with yellow flowers. -py-or-nis, s. [Gr. αἰπύς ( αipus ) = high and steep; όρνις (ornis) = bird.] Paleont . A genus of gigantic birds founded by Isidore Geoffroy St. Hilaire on some fo il bones and eggs brought from Madagascar. It belongs to the order Cursores, and has a certain affinity to the ostrich, but it is believed to have been twice as high as that tall bird. The eggs were 12 inches in length, and had a capacity equal to six ostrich eggs, or to 148 of the domestic fowl. The remains were found in alluvial soil, and were, geologically viewed, so recent that it is open to question whether living specimens may not yet be found in the unexplored parts of Madagascar.