| HD | Heavy Duty |
| THO | Thermal Heavy Oil |
| HLC | Heavy Lift Capability [Weltraum] |
| HLV | Heavy Lift Vehicle [Weltraum] |
| BHWR | Boiling Heavy Water Moderated and Cooled Reactor [engl.] Atomreaktor-Bauform, Schwerwasser-Siedereaktor |
| MIT | Metal-Insulator Transition |
| LME | London Metal Exchange |
| LMIS | Liquid Metal Ion Source |
| MIS | Metal Insulator Semiconductor |
| MDS | Metal-Dielectric-Semiconductor |
| MIGS | Metal-Induced Gap State |
| CTTM | Charge Transfer To Metal |
| MOS | Metal Oxide Semiconductor |
| Bb. | Babbitt Metal [engl.] Mit Weissmetall ausgegossen |
| MOV | Metal Oxide Varistor |
| NIMH | NIckel-Metal Hydride |
| UPD | Underpotential Metal Deposition |
| MOS | Metal Oxide Semiconductor [engl.] Halbleiter-Technologie |
| PMEP | Principal Metal ESCA Peak |
| LMCT | Ligand-to-Metal Charge Transfer |
| MLCT | Metal-to-Ligand Charge Transfer |
| MNS | Metal Nitride-Silicon [capacitor] |
| NIMH | Nickel Metal Hydride [Akkumulator] |
| AME | Advanced Metal Evaporated [engl.] |
| AMP | Advanced Metal Powder [engl.] |
| CMOS | Complementary Metal Oxide Semiconductor |
| COMS | Complementary Metal Oxide Semiconductor |
| LMI | Liquid Metal field Ionization |
| MCAC | Metal Chelate Affinity Chromatography |
| LMFR | Liquid Metal Fuel Reactor |
| P-MOS | Positive channel Metal Oxide Semiconductor |
| BMOS | Bipolar Metal Oxide Semiconductor [engl.] Halbleiteraufbau |
| mnos | Metal-Nitride-Oxide Semiconductor [silicon] |
| MRP | Metal Refining Process [Mannesmann DEMAG] |
| COSMOS | Complementary Symmetric Metal Oxide Semiconductor |
| DMOS | Double-diffused Metal-Oxide Semiconductor |
| HMOS | High performance Metal Oxide Semiconductor [vgl. MOS] |
| MESFET | Metal Semiconductor Field Effect Transistor |
| MOSFET | Metal Oxide Semiconductor Field Effect Transistor |
| N-MOS | Negative-Channel Metal-Oxide Semiconductor [engl.] Halbleiter-Technologie |
| BIMOS | Bipolar Metal Oxide Semiconductor [technique] [engl.] Halbleitertechnologie |