Webster's New World Medical Dictionary

microscope, electron
A microscope in which
an electron beam replaces light to form the image.
Electron microscopy (EM) has both pluses (greater
magnification and resolution than optical micro-
scopes) and minuses (the observer is not really
“seeing” objects, but rather their electron densities,
so artifacts may be present).
microscope, fluorescent
A microscope that is
equipped to examine material that fluoresces under
ultraviolet (UV) light.
microscope, simple
A microscope that has a
single converging lens.
microscopic
Too small to be seen without the aid
of a microscope, as opposed to macroscopic. For
example, a microscopic tumor is too small to be
seen without a microscpe.
microscopic anatomy
See 
anatomy, micro-
scopic.
microsomia
A body that is too small. A child with
microsomia has significant undergrowth.
micturate
To urinate.
micturition
Urination; the act of urinating.
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micturition
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micturition syncope
The temporary loss of con-
sciousness upon urinating. See also 
syncope; vaso-
vagal reaction.
middle ear
See 
ear, middle.
middle ear infection
See 
ear infection.
midwife
A trained person who assists women
during childbirth. Many midwives also provide pre-
natal care for pregnant women, birth education for
women and their partners, and care for mothers
and newborn babies after the birth. Depending on
local law, midwives may deliver babies in the
mother’s home, in a birthing center or clinic, or in
a hospital. Most midwives specialize in normal,
uncomplicated deliveries, referring women with
health problems that could require hospitalization
during birth to a hospital-based obstetrician. Others
work with physicians as part of a team. Legal quali-
fications required to practice midwifery differ
among the US states and various countries.