Truncus arteriosus is a rare and complex congenital (present at birth) heart defect that develops during the first eight weeks of pregnancy.Truncus arteriosus occurs when the two main blood vessels, the aorta and the pulmonary artery, stay connected and fail to separate completely as the fetus develops.Truncus arteriosus is further complicated because another congenital heart defect, ventricular special defect (VSD), occurs with it.runcus arteriosus occurs when the two main blood vessels, the aorta and the pulmonary artery, stay connected and fail to separate completely as the fetus develops. Truncus arteriosus is further complicated because another congenital heart defect, ventricular special defect (VSD), occurs with it.
Escutcheon (furniture) An escutcheon (pronounced /ÉªËskÊtÊÉn/, i-SKUCH-Én) is a general term for a decorative plate used to conceal a functioning, non-architectural item. Escutcheon is an old French word derived from the Latin word scutum, meaning a shield. Escutcheons are most often used in conjunction with mechanical, electrical, and plumbing components and fixtures where a pipe, tube, or conduit passes through a wall [or other material] surface.
1. a device for beheading a person, consisting of a heavy blade that drops between two posts serving to guide its fall. 2. any of various machines or instruments that cut powerfully and quickly, esp. one with a blade that drops vertically, as for trimming metal, paper, etc. v.t. 3. to behead by the guillotine.