iminodiacetic acid
noun
im·i·no·di·ace·tic acid
| \ ˌim-ə-ˌnō-ˌdī-ə-ˌsēt-ik-
\
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Medical Definition of iminodiacetic acid
: an imino acid C4H7NO4 that is the source of several derivatives used to visualize the hepatobiliary tract after labeling with a radioisotope of technetium