OSDH Views 5 meanings found OSDH can refer to a specialized optical effect in physics, a handbook for orbiter system definitions, or the Oklahoma State Department of Health, depending on the professional setting. Miscellaneous Operation Stand Down Huntsville Observatorio Sirio para los Derechos Humanos Governmental Orbiter System Definition Handbook Oklahoma State Department of Health Academic & Science Optical Shubnikhov-DeHaas effect