Acronym commonly used to describe digital video/audio services delivered via satellite to the home DTH services may be offered by DBS broadcasters or from conventional satellites
Dekatherm-one Dth of natural gas has a heating value of 1,000,000 British thermal units, approximately equal to the heating value of 1 Mcf of natural gas
A cell-mediated immune reaction (see cell-mediated immunity) to certain foreign antigens applied on the surface or just under the skin The reaction, consisting of a red bump or induration (hardening), takes 24 to 48 hours to develop DTH, which is the process involved in the reaction to poison ivy and poison oak as well as to the TB skin test, is often used in tests of immune system competence