hazelnut
- n any of several shrubs or small trees of the genus Corylus bearing edible nuts enclosed in a leafy husk
- n nut of any of several trees of the genus Corylus
hazelnut tree
- n any of several shrubs or small trees of the genus Corylus bearing edible nuts enclosed in a leafy husk
hazelwood
- n reddish-brown wood and lumber from heartwood of the sweet gum tree used to make furniture
haziness
- n vagueness attributable to being not clearly defined
- n cloudiness resulting from haze or mist or vapor
hazmat
- n an abbreviation for `hazardous material' used on warning signs
hb
- n a hemoprotein composed of globin and heme that gives red blood cells their characteristic color; function primarily to transport oxygen from the lungs to the body tissues
hcfc
- n a fluorocarbon that is replacing chlorofluorocarbon as a refrigerant and propellant in aerosol cans; considered to be somewhat less destructive to the atmosphere
hcg
- n hormone produced early in pregnancy by the placenta; detection in the urine and serum is the basis for one kind of pregnancy test
hdl
- n a lipoprotein that transports cholesterol in the blood; composed of a high proportion of protein and relatively little cholesterol; high levels are thought to be associated with decreased risk of coronary heart disease and atherosclerosis
hdl cholesterol
- n the cholesterol in high-density lipoproteins; the `good' cholesterol; a high level in the blood is thought to lower the risk of coronary artery disease
hdtv
- n a television system that has more than the usual number of lines per frame so its pictures show more detail