SYN: subdiaphragmatic.
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in·fra·dia·phrag·mat·ic .in-frə-.dī-ə-frə(g)-'mat-ik, -.frag- adj situated, occurring, or performed below the diaphragm <\infradiaphragmatic vagotomy> <an \infradiaphragmatic abscess>
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in·fra·di·a·phrag·mat·ic (in″frə-di″ə-frag-matґik) subphrenic.Medical dictionary. 2011.