The word spleen has its origin in the Greek splēn. In English it denotes the spleen.
The dictionary of the Royal Spanish Academy accepts the spelling "esplín" that already used Tomás de Iriarte in its poem "El esplín".
In French, spleen represents the state of melancholy without definite cause or vital anguish of a person. It was popularized by the poet Charles-Pierre Baudelaire (1821-1867) but had been used before, particularly during the literature of Romanticism, in the early nineteenth century. The connection between spleen (spleen) and melancholy comes from Greek medicine and the concept of moods. The Greeks thought that the spleen secreted black bile all over the body and this substance was associated with melancholy. Although today it is known that it is not, the idea remained in the language.
Opposed to this concept the Talmud (tractate Berachoth 61b) names the spleen as the organ of laughter, although an earlier relationship with the medicine of humors about this organ is not ruled out.
In German, the word "spleen" denotes someone continually irritable. The spleen instead is called milz (similar to the name milte that was given to the spleen in Old English). In the nineteenth century, women in a bad mood were said to be affected by the spleen. In modern English "to vent one's spleen" means "... express your anger". In China, spleen '脾 (pi2)' represents one of the foundations of temperament and is supposed to influence the power of will. Just as "venting one's spleen" (expressing anger), "发脾气" is used as an expression.
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