{Fatty acid} (Chem.), any one of the paraffin series of
monocarbonic acids, as formic acid, acetic, etc.; -- so
called because the higher members, as stearic and palmitic
acids, occur in the natural fats, and are themselves
fatlike substances.
{Fatty clays}. See under {Clay}.
{Fatty degeneration} (Med.), a diseased condition, in which
the oil globules, naturally present in certain organs, are
so multiplied as gradually to destroy and replace the
efficient parts of these organs.
{Fatty heart}, {Fatty liver}, etc. (Med.), a heart, liver,
etc., which have been the subjects of fatty degeneration
or infiltration.
{Fatty infiltration} (Med.), a condition in which there is an
excessive accumulation of fat in an organ, without
destruction of any essential parts of the latter.
{Fatty tumor} (Med.), a tumor consisting of fatty or adipose
tissue; lipoma.