advancing

1. gerundparticiplepresentpresent participle and gerund of advance

   For Louis XIV's advancing age, a drink consisting of sugar, distilled spirits, and orange water was recommended as a restorative of vigor.

   1961, Harry E. Wedeck, Dictionary of Aphrodisiacs, New York: The Citadel Press, page 211

   1 more example

   […] and although my invitation extended to both runs, advancing years dictated that 3 hr. 20 min. on the footplate was more than adequate, so that I chose the northbound run only; […]

   1951 December, Cecil J. Allen, “British Locomotive Practice and Performance”, in Railway Magazine, page 832

plural advancings

1. The act of proceeding forward; an advance.

   […] who feels, not as even the kindest and the holiest friend on earth can feel towards our patient endurance, our shortcomings, or our slow advancings […]

   1839, Henry Blunt, A practical exposition of the epistles to the Seven Churches, page 52