Ætherines are constituent components of ætheric para-matter. The substance of the sub-æther works by a physics yet unknown to man. What little is known is that the sub-ætheric stuff is composed of individual elements which can be separated into ætherines. A dozen or so ætherines have been identified. Others may be discovered in the future when more is known regarding the mechanics of the sub-æther.
Some of the ætherines that have practicle uses are Blaisine, Cavorigen, Retrogen and Infrathermium. All ætherines will be absorbed back into the ætheric medium if not properly insulated by certain energetic fields. Ætherines are separated from sub-ætheric para-matter using an ætherine still.