noun
sterilized intervention
Technical term in economics: a central bank's foreign exchange market intervention that is offset by domestic open market operations to neutralize the impact on the monetary base.
日本銀行は不胎化介入を行い、為替レートの安定を図った。
The Bank of Japan conducted sterilized intervention to stabilize the exchange rate.
Compound of 不胎化 (sterilization, from 不 'not' + 胎 'womb' + 化 '-ization') and 介入 (intervention). The term is a direct translation of the English 'sterilized intervention'.