25-letter words containing a, r, m, h
- tribasic sodium phosphate — sodium phosphate (def 3).
- undisputed world champion — a boxer who holds the World Boxing Association, the World Boxing Council, the World Boxing Organization, and the International Boxing Federation world championship titles simultaneously
- white sands missile range — a U.S. Army military testing ground for rockets and guided missiles in SW New Mexico, W of Alamogordo.