Dictionary.net

A term, frequently used by Boerhaave to express deviation of fluids, when they enter vessels not destined for them. Boerhaave admitted several orders of capillary vessels, the diameters of which went on decreasing. The largest received red blood, those which came next received only white, others only lymph, whilst the last of all were destined for yet more subtle fluids -for a kind of vapour. When the red globules entered vessels destined for the white, or the white those intended for the thinner fluids, there was, according to the theory of Boerhaave, an error loci, the proximate cause of inflammation and other mischiefs. See Aberration.