See Also: ferrocene(dictionary)

proegumenal (iou) and ferrocene (iou)


proegumenal (iou)



proegumenal adjective.M17-M19.
[from Greek proegoumen- pres. ppl stem of proegeisthai lead, precede: see -AL1.]
Logic. Of a cause: preceding, predisposing.

ferrocene (iou)



ferrocene noun. M20.
[from FERRO- + -cene from cyclopentadiene.]
Chemistry. An orange crystalline compound, Fe(C5H5)2, having a molecule in which two parallel planar aromatic cyclopentadiene ligands enclose an iron atom in a sandwich structure.