Archaea, n.


A taxon comprising the archaebacteria; (also archaea) organisms of this taxon (collectively or individually), archaebacteria. Cf. archaeon n.

Archaean, adj.


Of or pertaining to crystalline rocks of Pre-Cambrian age.

archeus, n.

The immaterial principle supposed by the Paracelsians to produce and preside over the activities of the animal and vegetable economy; vital force. (It was held that the chief archeus was situated in the stomach, and that subordinate archei regulated the action of other organs.)

He knows where the Old Ones broke through of old, and where They shall break through again. He knows where They have trod earth's fields, and where They still tread them, and why no one can behold Them as They tread.