What does HRH stand for?

Hand Receipt Holder (MCD)

High-Rate Heat

High Resistance Hold (SAUS)

Hilb, Rogal & Hamilton - NYSE symbol

Hilb, Rogal and Hamilton Co. - NYSE symbol

Hinckley Co., Southwest Harbor, ME - Manufacturer code for watercraft hull identification number (USCG)

His - or Her Royal Highness

Home of Rest for Horses (SAUO)

Howard Robard Hughes - 1905-1976 - American businessman

Hypoplastic Right Heart - Cardiology

Hypothalamic-Releasing Hormone (DB)

Royal Tongan Airlines - Tonga - ICAO designator (FAAC)