| megalecithal | Denoting an egg rich in yolk, as in bony fishes, reptiles, and birds. Origin: mega-+ G. Lekithos, yolk (05 Mar 2000) |
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| megalerg | <physics> A million ergs; a megerg. Origin: Megalo- + erg. Source: Websters Dictionary (01 Mar 1998) |
| megalethoscope | <instrument> An optical apparatus in which pictures are viewed through a large lens with stereoptical effects. It is often combined with the stereoscope. Origin: Mega- + alethoscope. Source: Websters Dictionary (01 Mar 1998) |
| megalgia | Very severe pain. Origin: mega-+ G. Algos, pain (05 Mar 2000) |
| megalo- | <prefix> Combining forms signifying: great, extended, powerful; as, megascope, megacosm. A million times, a million of; as, megameter, a million meters; megafarad, a million farads; megohm, a million ohms. Origin: Gr. Megas, gen. Megaloy, great. (29 Oct 1998) |
| megaloblast | <haematology> A large nucleated cell which is the precurson to alterations of the red blood cell sequence, these cells are found almost exclusively in people with pernicious anaemia. (29 Oct 1998) |
| megaloblastic | <haematology> A large abnormal red blood cell appearing in the blood in pernicious anaemia. (18 Nov 1997) |
| megaloblastic anaemia | Any anaemia in which there is a predominant number of megaloblastic erythroblasts, and relatively few normoblasts, among the hyperplastic erythroid cells in the bone marrow (as in pernicious anaemia). (05 Mar 2000) |
| megalocardia | <cardiology> Having an abnormally large heart. Origin: Gr. Kardia = heart (29 Oct 1998) |
| megalocephaly | A condition, either congenital or acquired, in which the head is abnormally large; usually applied to an adult skull with a capacity of over 1450 ml. Synonym: leontiasis ossea, macrocephaly, macrocephalia, megacephalia, megalocephaly, megalocephalia, Virchow's disease. Origin: mega-+ G. Kephale, head (05 Mar 2000) |
| megalocheiria | Megalochiria Synonym: macrocheiria. Origin: megalo-+ G. Cheir, hand (05 Mar 2000) |
| megalocornea | Congenital anomaly consisting of an enlarged anterior segment of the eye. Synonym: anterior megalophthalmos, megalocornea. Origin: kerato-+ L. Globus, ball (05 Mar 2000) |
| megalocystis | Synonym: megacystis. Origin: megalo-+ G. Kystis, bladder (05 Mar 2000) |
| megalocyte | <physiology> A large, flattened corpuscle, twice the diameter of the ordinary red corpuscle, found in considerable numbers in the blood in profound anaemia. Origin: Megalo- + Gr. A hollow vessel. Source: Websters Dictionary (01 Mar 1998) |
| megalocythemia | The occurrence of unusually large numbers of macrocytes in the circulating blood. Synonym: macrocytosis, megalocythemia, megalocytosis. Origin: macrocyte + G. Haima, blood Hyperchromatic macrocythemia, an inexact term frequently used for macrocytes that contain an unusually large amount of haemoglobin, but are actually normochromic; although the total mass of haemoglobin is greater than normal (owing to the large cells), the percentage of haemoglobin in the cells is not greater than normal. (05 Mar 2000) |