sesquiplane

Etymology
, referring to long and short wings as “one and a half” wings.

Noun

 * 1) A biplane having one long wing and one short one above or below it.

Translations

 * Chinese:
 * Mandarin: 倍半機
 * Finnish: sesquiplane-kaksitaso
 * German: Anderthalbdecker, Eineinhalbdecker