a peninsula in SE Asia, between the Bay of Bengal and the South China Sea, comprising Vietnam, Cambodia, Laos, Thailand, W Malaysia, and Burma (Myanmar).
Also called Farther India. a peninsula in SE Asia, between India and China: consists of Myanmar, Thailand, Laos, Cambodia, Vietnam, and Malaysia
2.
the former French colonial possessions of Cochin China, Annam, Tonkin, Laos, and Cambodia
Word Origin and History for Indochina
1886, from Indo-, comb. form of Greek Indos "India" + China. Name proposed early 19c. by Scottish poet and orientalist John Leyden, who lived and worked in India from 1803 till his death at 35 in 1811.