What does hg stand for?

Hectogram (ADWA)

Haggai - Old Testament book

Hemoglobin - Medicine (GOBB)

Heterodera glycenes - A nematode

Hydrargyrum - Mercury - Chemical element

Mercury - Chemical

Bad Homburg vor der Hoehe - German license plate city code

Centreline Air Services Ltd. - British - ICAO designator (ICDA)

Die Hethitischen Gesetze. Documenta et Monumenta Orientis Antiqui 7 - Leiden - A publication (BJA)

Half Gross (DNAB)

Hammurabi's Gesetz (BJA)

Hand Generator

Hand Ginned (SAUS)

Hand Grip (DMAA)

Handgrip Exercise (DB)

Harbor Airlines - ICAO designator (AD)

Hard Gelatin - Pharmacy

Hard Gypsum (SAUS)

Harmonic Generator

Harrogate - Postcode (ODBW)

Having (ROG)

Head Gasket - Automotive engineering

Head Gear (SAUS)

Headgear - Mining engineering (IAA)

Head Group (SAUO)

Heavens Gate

Heavy Grain (SAUS)

Hectogram

Heidelberg Graphics - Commercial firm

Height Gauge (SAUS)

Helical Gear (SAUS)

Heliogram

Hemoglobin - Biochemistry, medicine

Heptadecapeptide Gastrin - Endocrinology

Heritage Group (SAUO)

Herpes Genitalis - Infectious disease (DAVI)

Herpes Gestationis - Medicine

Herter-Gee - Syndrome - Medicine (DB)

Heschl's Gyrus - Brain anatomy

Hexylene Glycol - Organic chemistry

Higher Grade

High Gain - Medicine (EDAA)

High German - Language, etc.

High Glucose - Clinical chemistry

High Grade (SAUS)

High Grain (NASA)

His - or Her Grace

Hitchhiker Goddard mission (SAUS)

Holy Ghost

Holy Grail (ADWA)

Home Guard - British

Homing Guidance (AAG)

Horizon Grow - Astronomy (OA)

Horse Guards - British

Hotchkiss Gunner - British military (DMA)

House & Garden (SAUS)

Housing Guaranty

Hull Gage (SAUS)

Hull Gauge

Human Gastrin (SAUS)

Human Genetics - A publication (SAUS)

Human Genome - Medicine (MELL)

Human Gonadotrophin - Endocrinology

Human Growth - Factor - Endocrinology (DAVI)

Hutchinson-Gilford - Disease - Medicine (DB)

Hydraulic Gate (SAUS)

Hydrogen Gas - System - Nuclear energy (NRCH)

Hydrogen Generator

Hydrogeology (SAUS)

Hydrophilic Group - Surfactant technology

Hydrostatic Gage (SAUS)

Hyperglycemic-Glycogenolytic - Factor - Endocrinology

Hypertensive Group - Cardiology

Hypobranchial Gland

Hypoglycemia - Medicine (DMAA)

Office of Hearings and Appeals (SAUO)

Workout Handily from Gate - Horse racing