trans·il·lu·mi·na·tion (trāns'ĭ-lōō'mə-nā'shən, trānz'-) n. The passing of a light through the walls of a body part or organ to facilitate medical inspection. trans'il·lu'mi·nate' (-lōō'mə-nāt') v., trans'il·lu'mi·na'tor n.
Main Entry: trans·il·lu·mi·nate Pronunciation: "tran(t)s-&-'lü-m&-"nAt, "tranz- Function: transitive verb Inflected Forms:-nat·ed; -nat·ing : to cause light to pass through; especially: to pass light through (a body part) for medical examination<transilluminate the sinuses>
Main Entry: trans·il·lu·mi·na·tion Pronunciation: -&-"lü-m&-'nA-sh&n Function: noun : the act, process,or an instance of transilluminating