a process of steelmaking in which the charge is laid in a furnace (open-hearth furnace) on a shallow hearth and heated directly by burning gas as well as radiatively by the furnace walls.
a process for making steel using an open-hearth furnace
- Open-heart surgery
[oh-puh n-hahrt] /ˈoʊ pənˈhɑrt/ noun 1. surgery performed on the exposed heart while a heart-lung machine pumps and oxygenates the blood and diverts it from the heart.
- Open hospital
open hospital n. A hospital in which physicians who are not members of the attending and consulting staff may admit and treat patients.
noun 1. a party or reception during which anyone who wishes may visit to share in a celebration, meet a special guest, etc. 2. a time during which a school, institution, etc., is open to the public for exhibition or for some specific occasion. 3. a house hospitably open to all friends who may wish […]
noun 1. the sale and rental of private housing free of discriminatory practices or policies.