alkalescence

from The Collaborative International Dictionary of English v.0.48

Alkalescence \Al`ka*les`cence\, Alkalescency \Al`ka*les"cen*cy\,
   n.
   A tendency to become alkaline; or the state of a substance in
   which alkaline properties begin to be developed, or to
   predominant. --Ure.
   [1913 Webster]