17-letter words containing a, r, u, n, f
- vibrofluidization — Vibrofluidization is when vibration is used to make particles move in a fluidized bed.
- woman of the hour — a woman honored by a group.
- year of confusion — (in ancient Rome) the year of 445 days preceding the introduction, in 46 b.c., of the Julian calendar: lengthened to compensate for the cumulative errors of the Roman calendar.