mi·cro·gram 
(mīkrō-grăm′)
(mīkrō-grăm′)n.
A unit of mass equal to one thousandth (10-3) of a milligram or one millionth (10-6) of a gram.
- precipitation
- precipitative
- precipitator
- precipitin
- precipitinogen
- precipitous
- precipitously
- precipitousness
- precise
- precisely
- preciseness
- precisian
- precisianism
- precision
- precisionism
- precisionist
- preclinical
- preclude
- preclusion
- preclusive
- preclusively
- precocial
- precocious
- precociously
- precociousness