English
Outer Manchuria
From outer + Manchuria.
The story
The 21st century sense referring to territories ceded by China to Russia in the 19th century ^((please verify)) was created with the creation of a Wikipedia article in May 2004 for Outer Manchuria; it may be an instance of citogenesis. The same article ^((please verify)) is the source of Inner Manchuria referring to Manchuria (all northeast China).
Today it means
name The part of Russia near northeastern China (including Primorsky Krai and other nearby areas) which was annexed by the Russian Empire in the mid 19th century understood as part of Manchuria; similar or equivalent to Russian Manchuria.
Language periods are conventional ranges, not dates for this word.
Etymograph / Outer Manchuria