A metric unit of volume equal to 0.001 milliliter or 1 cubic millimeter (mm3). Microliters are used in chemistry and medicine to measure very small quantities of liquid. This unit has also been called the lambda
Russ Rowlett (Director), How Many? A Dictionary of Units of Measurement, Center for Mathematics and Science Education University of North Carolina, USA 2005. http://www.unc.edu/~rowlett/units/dictA.html, (Unit of Meas and Covr Factors - Amer) {608}