The story
Sar (arbitrary prefix) + gramostim (granulocyte macrophage colony stimulating factor)
Etymology from Wiktionary, CC BY-SA 4.0.
sargramostim
Today it means: A recombinant granulocyte-macrophage colony-stimulating factor (GM-CSF), produced in yeast, which functions as am immunostimulator, primarily used for myeloid reconstitution after bone marrow transplantation. Full definition →