advancing

verb

1. (form-of, gerund, participle, present)present participle and gerund of advance

   “[…] 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; […]”

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

noun

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 […]”