Tattoo is a loanword from the Samoan word "tatau", meaning "to strike". The "Oxford English Dictionary" gives the etymology of tattoo as "In 18th c. tattaow, tattow. From Polynesian (Samoan, Tahitian, Tongan, etc.) tatau. In Marquesan, tatu." Before the importation of the Polynesian word, the practice of tattooing had been described in the West as painting, scarring or staining. The etymology of the body modification term is not to be confused with the origins of the word for the military drumbeat or performance — see "military tattoo". In this case, the English word "tattoo" is derived from the Dutch word "taptoe".
Longest word in English likely to be encountered in general text are "deinstitutionalization" and "counterrevolutionaries", with 22 letters each. A computer study of over a million samples of normal English prose found that the longest word one is likely to encounter on an everyday basis is "uncharacteristically", at 20 letters. The word "internationalization" is abbreviated "i18n", the embedded number representing the number of letters between the first and the last. In his play "Assemblywomen" ("Ecclesiazousae"), the ancient Greek comedic playwright Aristophanes created a word of 171 letters (183 in the transliteration below), which describes a dish by stringing together its ingredients: Henry Carey's farce