Nouns starting with H

• haecceity — Noun – English ～ the essence that makes something the kind of thing it is and makes it different from any other
• haeckel — Noun – English ～ German biologist and philosopher; advocated Darwinism and formulated the theory of recapitulation; was an exponent of materialistic monism (1834-1919)
• haem — Noun – English ～ a complex red organic pigment containing iron and other atoms to which oxygen binds
• haemagglutination — Noun – English ～ agglutination of red blood cells
• haemal arch — Noun – English ～ a structure arising ventrally from a vertebral centrum and enclosing the caudal blood vessels
• haemangioma — Noun – English ～ benign angioma consisting of a mass of blood vessels; some appear as birthmarks
• Haemanthus — Noun – English ～ genus of African deciduous or evergreen bulbous herbs: blood lilies
• Haemanthus coccineus — Noun – English ～ 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 — Noun – English ～ vomiting blood
• haematinic — Noun – English ～ a medicine that increases the hemoglobin content of the blood; used to treat iron-deficiency anemia
• haematite — Noun – English ～ the principal form of iron ore; consists of ferric oxide in crystalline form; occurs in a red earthy form
• Haematobia — Noun – English ～ European genus of bloodsucking flies
• haematocele — Noun – English ～ swelling caused by blood collecting in a body cavity (especially a swelling of the membrane covering the testis)
• haematochezia — Noun – English ～ passage of stools containing blood (as from diverticulosis or colon cancer or peptic ulcer)
• haematocoele — Noun – English ～ swelling caused by blood collecting in a body cavity (especially a swelling of the membrane covering the testis)
• haematocolpometra — Noun – English ～ accumulation of blood in the vagina and uterus
• haematocolpos — Noun – English ～ accumulation of menstrual blood in the vagina (usually due to an imperforate hymen)
• haematocrit — Noun – English ～ the ratio of the volume occupied by packed red blood cells to the volume of the whole blood as measured by a hematocrit
• haematocrit — Noun – English ～ a measuring instrument to determine (usually by centrifugation) the relative amounts of corpuscles and plasma in the blood
• haematocytopenia — Noun – English ～ an abnormally low number of red blood cells in the blood

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