compound leaf; multifoliate leaf
Botanical term for a leaf divided into multiple leaflets. Contrasts with 単葉 (simple leaf).
See also: 単葉
Many ferns have compound leaves.
biplane
Aircraft with two sets of wings, one above the other. Contrasts with 単葉 (monoplane).
See also: 単葉
Biplanes were widely used in World War I.
ternate compound leaf
palmate compound leaf
pinnate compound leaf
複 (compound, multiple) + 葉 (leaf). The aviation sense is an extension from the botanical meaning, referring to the multiple wing planes.