hacksaw

saw used with one hand for cutting metal ;

hackwork

professional work done according to formula ;

had crime

(Islam) serious crimes committed by Muslims and punishable by punishments established in the Koran; "Had crimes include apostasy from Islam and murder and theft and adultery" ;

haddock

important food fish on both sides of the Atlantic; related to cod but usually smaller ; lean white flesh of fish similar to but smaller than cod; usually baked or poached or as fillets sauteed or fried ;

hadean

the earliest eon in the history of the Earth from the first accretion of planetary material (around 4,600 million years ago) until the date of the oldest known rocks (about 3,800 million years ago); no evidence of life ;

hadean aeon

the earliest eon in the history of the Earth from the first accretion of planetary material (around 4,600 million years ago) until the date of the oldest known rocks (about 3,800 million years ago); no evidence of life ;

hadean eon

the earliest eon in the history of the Earth from the first accretion of planetary material (around 4,600 million years ago) until the date of the oldest known rocks (about 3,800 million years ago); no evidence of life ;

hadean time

the earliest eon in the history of the Earth from the first accretion of planetary material (around 4,600 million years ago) until the date of the oldest known rocks (about 3,800 million years ago); no evidence of life ;

hades

(religion) the world of the dead; "he didn't want to go to hell when he died" ; (Greek mythology) the god of the underworld in ancient mythology; brother of Zeus and husband of Persephone ;

hadith

(Islam) the way of life prescribed as normative for Muslims on the basis of the teachings and practices of Muhammad and interpretations of the Koran ; (Islam) a tradition based on reports of the sayings and activities of Muhammad and his companions ;

hadj

the fifth pillar of Islam is a pilgrimage to Mecca during the month of Dhu al-Qadah; at least once in a lifetime a Muslim is expected to make a religious journey to Mecca and the Kaaba; "for a Muslim the hajj is the ultimate act of worship" ;

hadji

an Arabic term of respect for someone who has made the pilgrimage to Mecca ;

hadrian

Roman Emperor who was the adoptive son of Trajan; travelled throughout his empire to strengthen its frontiers and encourage learning and architecture; on a visit to Britain in 122 he ordered the construction of Hadrian's Wall (76-138) ;

hadrian's wall

an ancient Roman wall built by Hadrian in the 2nd century; marked the northern boundary of the Roman Empire in Britain ;

hadron

any elementary particle that interacts strongly with other particles ;

hadrosaur

any of numerous large bipedal ornithischian dinosaurs having a horny duck-like bill and webbed feet; may have been partly aquatic ;

hadrosauridae

duck-billed dinosaurs; upper Cretaceous ;

hadrosaurus

any of numerous large bipedal ornithischian dinosaurs having a horny duck-like bill and webbed feet; may have been partly aquatic ;

haecceity

the essence that makes something the kind of thing it is and makes it different from any other ;

haeckel

German biologist and philosopher; advocated Darwinism and formulated the theory of recapitulation; was an exponent of materialistic monism (1834-1919) ;

haem

a complex red organic pigment containing iron and other atoms to which oxygen binds ;

haemagglutination

agglutination of red blood cells ;

haemal arch

a structure arising ventrally from a vertebral centrum and enclosing the caudal blood vessels ;

haemangioma

benign angioma consisting of a mass of blood vessels; some appear as birthmarks ;

haemanthus

genus of African deciduous or evergreen bulbous herbs: blood lilies ;

haemanthus coccineus

spectacular plant having large prostrate leaves barred in reddish-purple and flowers with a clump of long yellow stamens in a coral-red cup of fleshy bracts; South Africa ;

haematemesis

vomiting blood ;

haematinic

a medicine that increases the hemoglobin content of the blood; used to treat iron-deficiency anemia ;

haematite

the principal form of iron ore; consists of ferric oxide in crystalline form; occurs in a red earthy form ;

haematobia

European genus of bloodsucking flies ;

haematobia irritans

small black European fly introduced into North America; sucks blood from cattle especially at the base of the horn ;

haematocele

swelling caused by blood collecting in a body cavity (especially a swelling of the membrane covering the testis) ;

haematochezia

passage of stools containing blood (as from diverticulosis or colon cancer or peptic ulcer) ;

haematocoele

swelling caused by blood collecting in a body cavity (especially a swelling of the membrane covering the testis) ;

haematocolpometra

accumulation of blood in the vagina and uterus ;

haematocolpos

accumulation of menstrual blood in the vagina (usually due to an imperforate hymen) ;

haematocrit

a measuring instrument to determine (usually by centrifugation) the relative amounts of corpuscles and plasma in the blood ; the ratio of the volume occupied by packed red blood cells to the volume of the whole blood as measured by a hematocrit ;

haematocytopenia

an abnormally low number of red blood cells in the blood ;

haematocyturia

the presence of red blood cells in the urine ;

haematogenesis

the formation of blood cells in the living body (especially in the bone marrow) ;