Enlargement of the medullary spaces in rarefying osteitis. ... (05 Mar 2000) ... 
(med″ә-lĭ-za´shәn) the enlargement of the haversian canals in rarefying osteitis followed by their conversion into marrow channels; also, the replacement of bone by marrow cells.
Type: Term Pronunciation: med′yŭ-li-zā′shŭn Definitions: 1. Enlargement of the medullary spaces in the treatment of various skeletal disorders.
medullization 1. Replacement of bone tissue by marrow, as in inflammatory bone disease. 2. Enlargement of the medullary spaces in the treatment of various skeletal disorders.