In organic chemistry, a pyrrole is a five membered aromatic ring, 4 elements of which are carbonatoms, one element of which is a nitrogen atom. The molecular formula for a pyrrole is C4NH5. The structure is:
... noun or adjective, Royalist, can have several shades of meaning. At its simplest, it refers to an adherent of a monarch or royal family.
Of the more specific uses of ...