Haemocytometer n. : See Haemacytometer.

Example:
what is the difference between a Haemocytometer and a petroff hausser counting chamber?

Taxonomy
cells, chamber, mm2, Neubauer hemocytometer, mixture, square, second chamber, grid, blood cells, concentration, liquid, free encyclopedia, cover glass, dilution, immobilized cells, viable cells, instrument, capillary action.

Defination from the web:
... The hemocytometer or haemocytometer is a device originally designed for the counting of blood cells. ...