ergot
  Fungus (Claviceps purpurea) infecting cereal plants; forms compact black
  masses of branching filaments that replace many of the grains of the
  host plant.  Disease caused by such a fungus.  The dried sclerotia of
  ergot obtained from rye is a source of several medicinal alkaloids and
  lysergic acid.

erigeron
  Genus of composite herbs having flower heads resembling asters.  Formerly
  used as a diuretic and as a hemostatic in uterine hemorrhage

erysipelas
  Acute skin disease caused by hemolytic streptococcus; marked by
  localized inflammation and fever.  Also called Saint Anthony’s fire.

eschar
  Dry scab or slough formed on the skin caused by a burn or by the action
  of a corrosive or caustic substance.

eucaine
  A crystalline substance, C15H21no2, used as a local anesthetic,
  substituting for cocaine, in veterinary medicine.

eucalyptol (cineole)
  Colorless oily liquid, C10H18O, from eucalyptus; used in
  pharmaceuticals, flavoring, and perfumery.

eucalyptus
  Trees of the genus Eucalyptus, native to Australia; they have aromatic
  leaves that yield an oil used medicinally.

farcy (see glanders)
  Chronic form of glanders that affects the skin and superficial lymph
  vessels.

febrile
  ferverish

felon
  Painful purulent infection at the end of a finger or toe in the area
  surrounding the nail.  Also called whitlow.

ferrocyanate
  Salt of ferrocyanic acid; a ferrocyanide.

fistula
  An abnormal duct or passage resulting from injury, disease, or other
  disorder that connects an abscess, cavity, or hollow organ to the body
  surface or to another hollow organ.

flounce
  Strip of decorative, gathered or pleated material attached by one edge,
  as on a garment or curtain.

fondant
  Sweet creamy sugar paste used in candies and icings.  Candy containing
  this paste.

fontanelles
  The soft membranous gaps between the incompletely formed cranial bones
  of a fetus or an infant.  Also called soft spot.

formaldehyde
  Colorless gaseous compound, HCHO, used to manufacture resins,
  fertilizers, dyes, and embalming fluids and in aqueous solution as a
  preservative and disinfectant.

formalin
  Aqueous solution of formaldehyde that is 37 percent by weight.

fossa
  A small depression, as in a bone.

foulard
  Lightweight twill or plain-woven fabric of silk or silk and cotton,
  often having a small printed design.  Necktie or scarf, made of this
  fabric.

Fowler’s solution
  Solution of arsenite of potassium in water; named for Fowler, an English
  physician who brought it into use.

frock coat
  Man’s dress coat or suit coat with knee-length skirts.