a. 1. In the van or front. [ 1913 Webster ]
2. In the front or before others, as regards progress or ideas; as, advanced opinions, advanced thinkers. [ 1913 Webster ]
3. Far on in life or time. [ 1913 Webster ]
A gentleman advanced in years, with a hard experience written in his wrinkles. Hawthorne. [ 1913 Webster ]
Advanced guard, a detachment of troops which precedes the march of the main body. [ 1913 Webster ]