an extreme condition or state (especially of adversity or disease)
"After months of battling a severe infection, the doctor warned that his immune system had reached its extremity and could no longer fight off the virus."
the outermost or farthest region or point
"At the extremity of the long coastline, a lonely lighthouse stood guarding the dark waters."
that part of a limb that is farthest from the torso
"She carefully bandaged her wrist after falling off the bike and feeling a sharp pain in her extremity."
The most extreme or furthest point of something.
"The climber reached out to grab a foothold at the very extremity of the crumbling ledge."
The word extremity comes from the Latin extrēmitātem, meaning "extremity," "border," or "ending." This Latin term was formed by combining extrēmīs, which means "furthest" or "extreme," with a suffix that indicates a state of being.