What does hr stand for?

Hair (VRA)

Hairless Mouse - Endocrinology (DMAA)

Hairspace - Printing (WDMC)

Hinge Remnant - Philately

Hour

Harbor - Nautical term (HRNC)

Henricus de Baila - Flourished, 1169-70 - Authority cited in pre-1607 legal work (DSA)

Honduras (MILB)

Hour (AMHC)

Hussar - British military (DMA)

Air Bremen - ICAO designator (AD)

Christmas Island - NCIC country-territory code (NCIC)

Croatia - Internet country code

Gevity - Company symbol

Hague Resolutions

Hail and Rain - Meteorology (BARN)

Hair Space between Letters - Proofreader's mark

Half-Reversal - Psychometrics

Half-Yearly Review

Hallux Rigidus - Orthopedics (DAVI)

Hall Wardrobes - Classified advertising (ADA)

Halorhodopsin - Biochemistry

Halstead-Reitan - Neuropsychological battery (DAVI)

Halton Rifles - British military (DMA)

Hamman-Rich - Syndrome - Medicine (DB)

Handling Room

Handling Routine (SAUS)

Hand RADAR (IAA)

Hand Reach - Automotive engineering

Hand Receipt (AABC)

Hand Reset

Hard-Pock Mining (SAUS)

Hard Rolled

Hardware Reliability (MCD)

Hardware Representation (SAUS)

Harrington & Richardson - NCIC firearms make code (NCIC)

Harrington Rod - Orthopedics (DAVI)

Hazardous Substance Disposal or Release (IDEM)

Hazard Ratio - Industrial hygiene term (OHS)

Hazard Report (MCD)

Hazards Research (SAUS)

Hazards Review (SAUS)

Heading Record (SAUS)

Healthcare Realty Trust - NYSE symbol (SPSG)

Hear - Amateur radio shorthand (WDAA)

Heart Rate - Medicine

Heart Resistant (SAUS)

Heart Rhythm - Cardiology

Heater (IAA)

Heating Rate (ARMP)

Heating Resistor (SAUS)

Heat Rash (MELL)

Heat Reflector

Heat Regenerator (SAUS)

Heat Resistance (SAUS)

Heat Resistant (SAUS)

Heat Resisting - Technical drawings

Heavy-Duty Relay (IAA)

Height Range - RADAR

Height, Room (SAUS)

Heir (ROG)

Helicopter Request - Military (NVT)

Helicopter, Rescue (SAUS)

Helium Rebottled - System

Helium, Refrigerated (AAG)

Hellenic Register - Greek ship classification society (DS)

Hemirectococcygeus (DB)

Hemophilia Research - An association - Defunct (EA)

Hemorrhagic Retinopathy - Ophthalmology

Henry Russell - Astronomy

Here - Telegraphy (PCTE)

Here - Amateur radio shorthand (WDAA)

Hermetic Rite - Freemasonry (ROG)

Heroes of the Reformation - A publication

Herr - Sir, Mr. - German

Hessischer Rundfunk - Hessian Radio Network - Germany

Heterogeneous Reactor (SAUS)

Heterosexual Relations - Scale

Hexazopararosaniline (SAUS)

Hierarchical Review (SAUO)

Higher (ROG)

Higher Rate

Highhams Railway - Wales

Highland Railway - Scotland

Highland Regiment - British military (DMA)

Highly Reinforcing (SAUS)

Highly Resistive (SAUS)

High-Range - RADAR (DEN)

High Rate (ACAE)

Highrate (SAUS)

High-Rate Reverse - Ecology

High Reduction - Microforms (NITA)

High Reflectance (SAUS)

High Reflection (SAUS)

High Reflector (IAA)

High Resilience - Plastics

High Resilient (SAUS)

High Resistance

High Resistor (SAUS)

High Resolution (MCD)

High Resolving (SAUS)

High Resonance-Damping (SAUS)

High Rezolution

High Rise

High-Riser - Automotive engines

High Risk

High Run

High-Speed Radial - Automotive tires

High-S Radial (SAUS)

Hillside Review (SAUS)

Hilson Research, Inc. - Commercial firm

Hispanic Review - A publication (SAUS)

Histamine Release - Immunology

Historical Record (NASA)

Historical Reports (SAUO)

Historical Research (FOTI)

History Report (MCD)

Histrical Record (SAUS)

Hit Rate (MUGU)

Hit Ratio

Hoechst-Roussel Pharmaceuticals, Inc. - Research code symbol

Hoerner - Horns - Music

Hoge Raad - Dutch Supreme Court (DLA)

Hoist Ring (SAUS)

Hojesteret - Supreme Court - Netherlands (ILCA)

Holding Register

Holiday Route (CDAI)

Holmes Ribgrass (SAUS)

Homberg - Efze - German license plate city code

Homeostatic Regulators - British

Home Room (SAUS)

Home Rule

Home Rules (SAUS)

Home Run - Baseball

Homing Relay (SAUS)

Homoreactant - Medicine

Hook Rail (MSA)

Horizon Sensor (SAUS)

Horizontally-pivoted Reversible (SAUS)

Horizontal Resistance - Plant pathology

Horizontal Retort

Horizontal Rule (SAUS)

Hormonal Response - Medicine (DMAA)

Hormone Receptor (MELL)

Hormone Receptor Complex - Endocrinology

Hormone-Responsive (DB)

Horology Program - Association of Independent Colleges and Schools specialization code

Hose Rack (AAG)

Hospitalman Recruit

Hospital Record

Hospital Recruit

Hospital Report (MAE)

Hotel Rates

Hot Rolled (MSA)

Hot Rolling (SAUS)

Hour (AAG)

Hourly Report (DNAB)

House of Representatives

House of Representatives Bill - with Number

House of Representatives Recedes (SAUO)

House of Ruth (EA)

House Recedes

House Record (SAUS)

House Report

House Resolution

House Roll - Legal term (DLA)

Housing and Rent Act (SAUO)

Howship-Romberg - Syndrome - Medicine (DB)

Hudson Review - A publication (BRI)

Humanitarian Reassignment - Military (AFM)

Human Reliability

Human Resources

Human Rights Convention - Council of Europe (DLA)

Humber Register - St. Albans, Hertfordshire, England (EAIO)

Humidity, Relative

Hydraulic Research (SAUS)

Hydraulics Research Ltd. - British (IRUK)

Hydrogen Recombiner (NRCH)

Hydrogen Relief (NASA)

Hypersensitive Response - Biology

Hypophosphatemic Rickets - Medicine (DMAA)

International Harvester Co. (SAUO)

Relative Humidity (SAUS)

Robin Avions - Pierre Robin - France - ICAO aircraft manufacturer identifier (ICAO)

Rockwell Hardness (SAUS)

Shore