From English - German Ding/FreeDict dictionary ver. 1.9-fd1: vertical speed indicator /vˈɜːtɪkəl spˈiːd ˈɪndɪkˌeɪtə/ (VSI /vˌiːˌɛsˈaɪ/) Steiggeschwindigkeitsmesser <masc>, Steig- und Sinkmesser <masc>, Variometer <neut> [aviat.] Synonyms: vertical velocity indicator, rate-of-climb indicator, rate-of-climb-and-descent indicator, variometer
vertical speed indicator /vˈɜːtɪkəl spˈiːd ˈɪndɪkˌeɪtə/ (VSI /vˌiːˌɛsˈaɪ/) Steiggeschwindigkeitsmesser <masc>, Steig- und Sinkmesser <masc>, Variometer <neut> [aviat.] Synonyms: vertical velocity indicator, rate-of-climb indicator, rate-of-climb-and-descent indicator, variometer