This is the 8906th most frequent German word.
landsteiner
"Landsteiner" is typically a surname and does not have a standalone definition in German.
The word 'Landsteiner' is used as a proper noun referring to the scientist who made this discovery.
Landsteiner entdeckte die Blutgruppen A, B, AB und 0.
Landsteiner discovered the blood groups A, B, AB, and 0.
Here, 'Landsteiner' is part of a compound noun (Landsteiner-Theorie) referring to a theory named after the individual.
Die Landsteiner-Theorie wird in der Immunologie häufig diskutiert.
The Landsteiner theory is frequently discussed in immunology.
In this sentence, 'Landsteiner' refers to the full name of Karl Landsteiner, connecting the person to his scientific achievements.