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10 Cards in this Set

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centi-
one hundredth
Centimeter (cm): A unit of measure in the metric system which is 1/100'th of a meter. There are 2.54 centimeters (cms) in one inch. The centimeter is commonly used in medicine to state the size of objects or distance between points.

It may seem senseless to define a centimeter in a medical dictionary but in North American medicine (and medicine everywhere) today, length measurements are usually expressed in such metric units and not in inches or feet.

dec-
deca-
ten
deci-
one tenth
giga-
billion
hect-
hecto-
one hundred
kilo-
thousand
Kilobase: Unit of length of DNA equal to 1000 nucleotide bases.
meg-
mega-
million
(prefix): The combining form "mega-" comes from the Greek "megas", great or big and means abnormally large. Megalocephaly is too large a head. Megacardia is too large a heart. Megacolon is too large a colon.
micro-
one millionth
Prefix derived from the Greek "mikros" meaning small. Examples of the many biomedical terms containing "micro-" include the following:

microangiopathy,
microcephaly,
microcystic (as in microcystic corneal dystrophy),
microhematuria,
microorchidism,
micropenis,
microphallus,
micropigmentation ,
microscope,
microscopy (as in electron microscopy), and
microsomia.
In premed and medical student lingo, micro is short for microbiology (or microscopic anatomy, i.e. histology).

milli-
one thousanth
Milligram: A unit of measurement of mass in the metric system equal to a thousandth of a gram. A gram is equal to the mass of one milliliter, one thousandth of a liter, of water at 4 degrees C.

The abbreviation for milligram is mg.

nano-
one billionth