Definition of yellow fever
: an acute infectious disease that is endemic in sub-Saharan Africa and tropical South America, is marked by symptoms (such as fever, muscle pain, and headache) of sudden onset which typically resolve within a few days but are sometimes followed by more serious symptoms (such as jaundice, high fever, and hemorrhage), and is caused by a flavivirus (species Yellow fever virus of the genus Flavivirus) transmitted especially by the yellow-fever mosquito
Our Reviews team has selected the best thermometers.
Love words? Need even more definitions?Merriam-Webster unabridged
Words at Play
Ask the Editors