In the genitive and attributive. Designating the bacterium Salmonella enterica serovar Enteritidis, which is a major cause of food poisoning. Also: designating a group of bacteria including this and closely related salmonellae, and infections with such bacteria.
Late 19th century; earliest use found in American Journal of the Medical Sciences. From the name of August Anton Hieronymus Gärtner, German bacteriologist.
1historical In the genitive and attributive, especially in "Gaertner's tonometer". Designating an apparatus used to measure (or estimate) blood pressure, consisting of an inflatable ring placed around a finger, with a manometer measuring the pressure required to stop arterial pulsation in the finger.
2rare In the genitive, especially in "Gaertner's phenomenon". Designating the change in the degree of fullness of veins of the arm as it is raised to varying heights above the heart, used as an estimate of pressure in the right atrium.
Early 20th century; earliest use found in The British Medical Journal. From the name of Gustav Gärtner, Austrian physician.