What is the root word for spleen in medical terminology?

The root word for spleen in medical terminology is "splen/o." This term specifically refers to the spleen, an important organ in the immune system and blood filtration. In medical terminology, the root words often indicate specific body parts or systems, and the prefix or suffix can modify their meanings for various contexts. For instance, "splen/o" is commonly used in medical terms related to the spleen, such as "splenomegaly," which refers to an enlarged spleen.

Other options represent different roots: "thromb/o" relates to clots, "hem/o" pertains to blood, and "tox/o" focuses on toxins or poisons. Each of these root words serves distinct purposes in medical language, making "splen/o" the correct choice when referring specifically to the spleen.