| Acronym | Meaning |
 | HMD | Heard And McDonald Islands (ISO 3166 Trigram) |
| SIG | .signature (UNIX Shell/Internet Standard File Name) -Special Interest Group |
| FEAR | First Encounter Assault Recon - False Evidence Appears Real |
| HLA | High Level Architecture - Human Leukocyte Antigen |
| YGCO | Yamaneko Group Of Comet Observers |
| ISCII | Indian Standard Code For Information Interchange |
| DSAA | (U.S.) Defense Security Assistance Agency |
| ELP | Emerson Lake And Palmer |
| EH | Exahenry - Western Sahara (ISO 3166 Digram) |
| NPH | Normal Pressure Hydrocephalus |
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