A transient increase in the number of leucocytes in the circulating blood, resulting from various causes, as haemorrhage, fever, infection, inflammation, etc. ... (18 Nov 1997) ... Found on http://www.encyclo.co.uk/local/20973
Leucocytosis is the name given to a condition of the blood in which the leucocytes or white corpuscles in the blood plasma are increased in number. These leucocytes are minute protoplasmic cells, which have the power of movement and can pass out of the smallest capillary blood vessels into the surrounding tissues. They act as scavengers, and play a... Found on http://www.probertencyclopaedia.com/browse/EL.HTM