golden seal
  See hydrastis.

groats
  Hulled, usually crushed grain, especially oats.

grosgrain
  Closely woven silk or rayon fabric with narrow horizontal ribs.  Ribbon
  made of this fabric.

gruel
 Thin porridge (usually oatmeal or cornmeal).  See page 574.

guaiacum (guaiac )
  Tree of the genus Guaiacum; a lignum vitae.  Greenish-brown resin from
  this tree, used medicinally and in varnishes.

gustatory
  Concerning the sense of taste.

haematuria
  Blood in the urine.

hamamelis
  Genus of shrubs or small trees (family Hamamelidaceae), including the
  witch hazels.  Dried leaves of a witch hazel (Hamamelis virginiana) of
  the eastern U.S. used formerly as a tonic and sedative.

hartshorn
  Antler of a hart, formerly used as a source of ammonia and in smelling
  salts.  Ammonium carbonate.

hellebore
  Plants of the genus Helleborus, native to Eurasia, most of which are
  poisonous.  Plants of the genus Veratrum, especially V. viride of North
  America, yielding a toxic alkaloid used medicinally.

henbane (black henbane, insane root)
  Poisonous Eurasian plant (Hyoscyamus niger) having an unpleasant odor,
  sticky leaves, and funnel-shaped greenish-yellow flowers.  It is a source
  hyoscyamus, hyoscamine and scopolamine.

henna
  Tree or shrub (Lawsonia inermis) of the Middle East, having fragrant
  white or reddish flowers.  Reddish-orange dyestuff prepared from the
  dried and ground leaves of this plant, used as a cosmetic dye and for
  coloring leather and fabrics.  To dye (hair, for example) with henna.

Hepar
  Liver of sulphur; a substance of a liver-brown color, sometimes used in
  medicine.  Fformed by fusing sulphur with carbonates of the alkalies
  (esp. potassium), and consists essentially of alkaline sulphides.  Called
  also hepar sulphuris.  A substance resembling hepar; in homeopathy,
  calcium sulphide, called also hepar sulphuris calcareum.

hepatica (liverleaf)
  Woodland plants of the genus Hepatica, especially H. americana of
  eastern North America, having three-lobed leaves and white or lavender
  flowers.

Herpes Zoster
  Varicella-zoster virus:  A herpesvirus that causes chickenpox and
  shingles.  Causes an acute viral infection—­inflammation of the sensory
  ganglia of spinal or cranial nerves and the eruption of vesicles along
  the affected nerve path.  It usually strikes only one side of the body
  and is often accompanied by severe neuralgia.

Honduras Bark
  Dried bark of a tropical American tree (Picramnia antidesma) formerly
  used in the treatment of syphilis and skin diseases.

Hunyadi (Hunyady )
  Hungarian noble family, partly of Romanian origin.  The first recorded
  member of the family was Serbe, who settled in Hunyad county in
  Transylvania from Wallachia.