wastage

Short definition from Wiktionary

Noun

1. 1
   The amount or proportion of something that is wasted or lost by deterioration or other natural process.
2. 2
   The periodical turnover of personnel in an organisation by death, retirement or resignation, as perceived by those aspiring to promotion or appointment in the organisation.
3. 3
   Anything lost by wear or waste.
4. 4
   Goods that are damaged, out of date, reduced, or generally unsaleable, which are destined to be thrown away and which are written off as a loss.
5. 5
   The act of abandoning animal carcasses or parts, usually illegal.