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English word spleen comes from Ancient Greek σπλήν, and later Latin splen (Spleen, milt.)
σπλήν (Ancient Greek)
splen (Latin)
Spleen, milt.
esplen (Old French)
(anatomy) spleen.
spleen (English)
(obsolete, transitive) To dislike. (anatomy, immunology) In vertebrates, including humans, a ductless vascular gland, located in the left upper abdomen near the stomach, which destroys old red blood cells, removes debris from the bloodstream, acts as a reservoir of blood, and produces lymphocytes.. (archaic, except in the set phrase "to vent one's spleen") A bad mood; spitefulness.. [...]