| chad | A republic in central africa, west of sudan. Its capital is n'djamena, called fort-lamy before 1973. Explored in 1891 by the french, it became part of french equatorial africa in 1910 and, after many changes of status, became independent in 1960. The republic is named from lake chad, from the arabic tsad, a local word meaning large expanse of water (or lake). (12 Dec 1998) |
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| Chaddock reflex | <clinical sign> When the external malleolar skin area is irritated, extension of the great toe occurs in cases of organic disease of the corticospinal reflex paths. Synonym: Chaddock reflex, external malleolar sign. (05 Mar 2000) |
| Chaddock sign | <clinical sign> When the external malleolar skin area is irritated, extension of the great toe occurs in cases of organic disease of the corticospinal reflex paths. Synonym: Chaddock reflex, external malleolar sign. (05 Mar 2000) |
| Chaddock, Charles | <person> U.S. Neurologist, 1861-1936. See: Chaddock reflex, Chaddock sign. (05 Mar 2000) |
| Chadwick's sign | <clinical sign> A bluish discoloration of the cervix and vagina, a sign of pregnancy. (05 Mar 2000) |
| Chadwick, James | <person> U.S. Gynecologist, 1844-1905. See: Chadwick's sign. (05 Mar 2000) |