| megalerg | <physics> A million ergs; a megerg. Origin: Megalo- + erg. Source: Websters Dictionary (01 Mar 1998) |
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| 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) |
| megalocytic anaemia | Any anaemia in which the average size of circulating erythrocytes is greater than normal, i.e., the mean corpuscular volume is 94 cu um or more (normal range, 82 to 92 cu um), including such syndromes as pernicious anaemia, sprue, coeliac disease, macrocytic anaemia of pregnancy, anaemia of diphyllobothriasis, and others. Synonym: megalocytic anaemia. (05 Mar 2000) |