total end-diastolic diameter

to·tal end-di·a·stol·ic di·am·e·ter (TEDD),

cross-sectional diameter of the left ventricle including the septum and posterior wall thicknesses in diastole.

to·tal end-di·a·stol·ic di·am·e·ter

(tō'tăl end dī'ă-stol'ik dī-am'ĕ-tĕr) Cross-sectional diameter of the left ventricle, including the septum and posterior wall thicknesses in diastole.