What is the correct plural form of “thrombus”?

The correct plural form of “thrombus” is “thrombi.” This stems from the word's Latin origin, where many medical terms derived from Latin follow a particular pattern for pluralization. The suffix “-us” in Latin typically changes to “-i” when the word is made plural. Thus, “thrombus,” which refers to a blood clot, becomes “thrombi” in the plural. This pattern is common for several other medical terms, reinforcing the importance of understanding the linguistic roots of such vocabulary in the medical field.

The other options do not follow the established rules of Latin pluralization and therefore are not correct. For example, “thrombas” and “thrombes” do not reflect proper Latin endings, while “thrombius” introduces an incorrect suffix that does not exist in standard medical terminology. Understanding these linguistic conventions aids in properly using medical terminology.