sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| Higher Order Spectral | **** |
| Hands on Sacramento | **** |
| Head of Scrutiny | **** |
| Heckscher Ohlin Samuelson | **** |
| Hotel Office Space | **** |
| Hands on Science | **** |
| Houston Orchid Society | **** |
| Harmony of Souls | **** |
| Health Omnibus Survey | **** |
| Harvesters of Sorrow | **** |
| Hearts of Stone | **** |
| Home Ownership Schemes | **** |
| Hector on Stilts | *** |
| Hypo Osmotic Swelling | *** |
| Hampshire Ornithological Society | *** |
| Head of Service | *** |
| Hands on Spanish | *** |
| Hands on Support | *** |
| Health Online Service | *** |
| Ha Only Serious | *** |
| Hornbeck Offshore Services | *** |
| Hands on Shanghai | *** |
| Harvard Oriental Series | *** |
| Hellenic Ornithological Society | *** |
| Heads of Schools | *** |
| House of Shadows | *** |
| Houston Ophthalmological Society | *** |
| Halls of Sanity | *** |
| Hyper Operating System | *** |
| Heads of Service | *** |
| History of Sindy | *** |
| Homologue of Slimb | *** |
| House of Securities | *** |
| Hotdog on Stick | *** |
| Human Osteogenic Sarcoma | *** |
| Health Or Safety | *** |
| Humanistische Omroep Stichting | *** |
| Home Ownership Secondary | *** |
| Harlem Office Supply | *** |
| acetaldehyde/hydroxylamine O-sulfonate | ** |
| high order statistics | ** |
| higher order spectra | ** |
| hypo-osmotic swelling | ** |
| hypoxic-optokinetic stimulus | ** |
| Health of Seniors | ** |
| Hypo-osmotic sperm swelling | ** |
| hypo-osmotic swelling test | ** |
| hornbeck offshore svcs | ** |
| Houston Ophthalmology Society | ** |
| health outreach services | ** |
| Hispanic Outreach Services | ** |
| human osteoblast-like cells | ** |
| human osteoblastic cells | ** |
| human osteosarcoma cells | ** |
| hydroxylamine-O-sulfonic acid | ** |
| Hunter Outcome Survey | ** |
| Head of Operational Services | ** |
| Head of Specialisation | ** |
| Human Operating System | ** |
| human osteosarcoma cell line | ** |
| Medicare Health Outcomes Survey | ** |
| Honolulu Orchid Society | ** |
| Hotel Operational Services | ** |
| Housing Ombudsman Service | ** |
| High Order Surfaces | ** |
| Ham Operator Software | ** |
| High Oxygen Submersion | ** |
| Houston Objectivism Society | ** |
| Heads of Systems | ** |
| High Order Systems | ** |
| Hardware Operating System | ** |
| Hruby Orbital Systems | ** |
| Heimili Og Skoli | ** |
| hornbeck offshr srvs | ** |
| Hotel Occupancy Survey | ** |
| Higher Order Signatures | ** |
| Hawaii Ophthalmological Society | ** |
| Hunde Ohne Schutz | ** |
| Hawaii Orchid Societies | ** |
| Human and Organizational Studies | ** |
| Hazardous Operations Support | ** |
| Health Opinion Survey | * |
| Helping Others Succeed | * |
| hornbeck offshore srvcs | * |
| House of Spades | * |
| Hands on Services | * |
| High Order Software | * |
| Hazard and Operability Study | * |
| Hours of Servitude | * |
| Hrvatske Oslobodilacke Snage | * |
| High Order System | * |
| Hardness Or Stability | * |
| Harvest Operative Supermarket | * |
| Hawaii Online Services | * |
| Hawaiian Ocean Series | * |
| Head Of Sorghum | * |
| Hearts Of Space | * |
| History Of Science | * |
| Hoosier Online Systems | * |
| Horizon Of Soil | * |
| Horizons or Other Strata | * |
| Hotlist for Oceanography Sites | * |
| How to Outwit Squirrels | * |
| Hub Online for Speaking | * |
| Huffer Operation Shaft | * |
| Husky Oil Sulphur | * |
| Hutter Oil Spill | * |