price fall; fall in prices
A straightforward compound noun used in economic contexts to describe a decline in the general price level or specific prices.
Recently, prices have been falling continuously.
The government announced measures to halt the fall in prices.
物価上昇 means a rise in prices, the opposite of 物価下降.
デフレ (deflation) is a broader economic concept of a sustained decrease in the general price level, while 物価下降 can refer to any price fall.
Compound of 物価 (prices) and 下降 (fall, descent).