Analysis of information sources in references of the Wikipedia article "Tonkatsu" in English language version.
(rough translation): In Western cuisine, "frying" means to deep-fry or sautee in oils or fats. [...] In Japan, "furai" refers to foods that are dipped in wheat flour, beaten egg, bread crumbs and then deep-fried, [...]. If the ingredient is meat, it is called "chikin katsuretsu", "pōku katsuretsu (tonkatsu)" etc., respectively.[...]
(rough translation): 1.[...ingredients] dipped in batter made of wheat flour, egg and water, then fried in vegetable oil. Vegetable tempuras are sometimes distinguished and called "shōjin-age". [...]