diminuendo

noun diminuendo

• depreciation — the reduction in value of a fixed asset due to use, obsolescence, etc
• diminution — the act, fact, or process of diminishing; lessening; reduction.
• attenuation — the act of attenuating or the state of being attenuated
• declination — the angular distance, esp in degrees, of a star, planet, etc, from the celestial equator measured north (positive) or south (negative) along the great circle passing through the celestial poles and the body
• regression — the act of going back to a previous place or state; return or reversion.