a. Chem. [TRI- 5 c.] Containing three substituted atoms or radicals. So Trisubstitution.
1904. Jrnl. Phys. Chem., April, 298. Trisubstituted acids are less associated than disubstituted acids, and these latter less than monosubstituted acids.
Mod. Trichloracetic acid is a trisubstitution product.
