|
|
hard steel |
Noun
|
steel with more than 0.3% carbon |
|
|
hard water |
Noun
|
water that contains mineral salts (as calcium and magnesium ions) that limit the formation of lather with soap |
|
|
harlequin opal |
Noun
|
a reddish opal with small patches of brilliant color |
|
|
hematite |
Noun
|
the principal form of iron ore |
|
|
haematite |
Noun
|
the principal form of iron ore |
|
|
hemiacetal |
Noun
|
an organic compound usually formed as an intermediate product in the preparation of acetals from aldehydes or ketones |
|
|
hemolysin |
Noun
|
any substance that can cause lysis (destruction) of erythrocytes (red blood cells) and the release of their hemoglobin |
|
|
haemolysin |
Noun
|
any substance that can cause lysis (destruction) of erythrocytes (red blood cells) and the release of their hemoglobin |
|
|
heptane |
Noun
|
a colorless volatile highly flammable liquid obtained from petroleum and used as an anesthetic or a solvent or in determining octane ratings |
|
|
herbicide |
Noun
|
a chemical agent that destroys plants or inhibits their growth |
|
|
hexane |
Noun
|
a colorless flammable liquid alkane derived from petroleum and used as a solvent |
|
|
high brass |
Noun
|
brass with 35% zinc |
|
|
high-density lipoprotein |
Noun
|
a lipoprotein that transports cholesterol in the blood |
|
|
high-level radioactive waste |
Noun
|
radioactive waste that left in a nuclear reactor after the nuclear fuel has been consumed |
|
|
high-speed steel |
Noun
|
an alloy steel that remains hard at a red heat |
|
|
hot-work steel |
Noun
|
an alloy steel that remains hard at a red heat |
|
|
hip tile |
Noun
|
a tile shaped so as to cover the hip of a hip roof |
|
|
hipped tile |
Noun
|
a tile shaped so as to cover the hip of a hip roof |
|
|
histidine |
Noun
|
an essential amino acid found in proteins that is important for the growth and repair of tissue |
|
|
histaminase |
Noun
|
enzyme that acts as a catalyst in converting histidine to histamine |
|
|
homogenate |
Noun
|
material that has been homogenized, especially tissue that has been ground and mixed |
|
|
humectant |
Noun
|
any substance that is added to another substance to keep it moist |
|
|
humate |
Noun
|
material that is high in humic acids |
|
|
humic acid |
Noun
|
a dark brown humic substance that is soluble in water only at pH values greater than 2 |
|
|
humic substance |
Noun
|
an organic residue of decaying organic matter |
|
|
humin |
Noun
|
a black humic substance that is not soluble in water |
|
|
high-strength brass |
Noun
|
a brass with from 1-4% manganese to harden it |
|
|
hydrolith |
Noun
|
a saltlike binary compound (CaH2) used as a reducing agent and source of hydrogen |
|
|
hexadecanoic acid |
Noun
|
a saturated fatty acid that is the major fat in meat and dairy products |
|
|
human gamma globulin |
Noun
|
a plasma protein containing the immunoglobulins that are responsible for immune responses |
|
|
hair dye |
Noun
|
a dye or tint for the hair |
|
|
hematochrome |
Noun
|
a reddish coloring material found in some algae |
|
|
henna |
Noun
|
a reddish brown dye used especially on hair |
|
|
henna |
Verb
|
apply henna to one's hair |
|
|
hemosiderin |
Noun
|
a granular brown substance composed of ferric oxide |
|
|
haemosiderin |
Noun
|
a granular brown substance composed of ferric oxide |
|
|
heterophil antibody |
Noun
|
an antibody found in the blood of someone suffering from infectious mononucleosis |
|
|
heterophile antibody |
Noun
|
an antibody found in the blood of someone suffering from infectious mononucleosis |
|
|
hiddenite |
Noun
|
a green transparent form of the mineral spodumene used as a gemstone |
|
|
hemoglobin |
Noun
|
a hemoprotein composed of globin and heme that gives red blood cells their characteristic color |
|
|
haemoglobin |
Noun
|
a hemoprotein composed of globin and heme that gives red blood cells their characteristic color |
|
|
heme |
Noun
|
a complex red organic pigment containing iron and other atoms to which oxygen binds |
|
|
haem |
Noun
|
a complex red organic pigment containing iron and other atoms to which oxygen binds |
|
|
hepatotoxin |
Noun
|
any toxin that affects the liver |
|
|
hematin |
Noun
|
a complex red organic pigment containing iron and other atoms to which oxygen binds |
|
|
haemitin |
Noun
|
a complex red organic pigment containing iron and other atoms to which oxygen binds |
|
|
hemin |
Noun
|
a reddish-brown chloride of heme |
|
|
heterocyclic compound |
Noun
|
a compound containing a heterocyclic ring |
|
|
hematohiston |
Noun
|
a colorless protein obtained by removing heme from hemoglobin |
|
|
haematohiston |
Noun
|
a colorless protein obtained by removing heme from hemoglobin |