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histochemistry
histocompatibility
histocompatibility antigen
histodialysis
histogenesis
histogram
histology
histolysis
histone
histopathology
histophysiology
histoplasmosis
historian
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Historic Places Trust
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histone

his·tone [ hí stn ] (plural his·tones)


noun 
Definition:
 
protein in cell nuclei: a simple protein bound to DNA, involved in the coiling of chromosomes. There are five types, together constituting about half the mass of chromosomes.

[Late 19th century. < German Histon]
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