turn·o·ver / ˈtərnˌōvər/ • n. 1. the amount of money taken by a business in a particular period: a turnover approaching $4 million. ∎ Stock Market the volume of shares traded during a particular period, as a percentage of total shares listed.2. the rate at which employees leave a workforce and are replaced. ∎ the rate at which goods are sold and replaced in a store.3. a small pie made by folding a piece of pastry over on itself to enclose a sweet filling: an apple turnover.4. (in a game) a loss of possession of the ball to the opposing team.
1. The proportion of a population that is lost (e.g. by death or emigration) or gained (e.g. by reproduction or immigration) in a given period.
2. The replacement of species by extinction within an area and their replacement by newly evolved or immigrant species.
3. The ratio of the energy entering a community or ecosystem to the biomass.