The number of years required for the population of an area to double its present size, given the current rate of population growth.

number of years needed to double a population.

number of years taken for a population to double in size (number).

In biology, the amount of time it takes for one cell to divide or for a group of cells (such as a tumor) to double in size. The doubling time is different for different kinds of cancer cells or tumors [..]

The time during which the fissile material input of a breeding reactor doubles. Depending on the breeding reactor concept, doubling times of 8 to 20 years result.

The time it takes for a particular level of population to double in size. A fairly accurate doubling time estimate can be computed by taking the annual growth rate and dividing it by 70. At 2% annual growth world population (5.5 billion in 1996) will double in size (to 11 billion) in about 35 years (2031) assuming the annual growth stays constant ( [..]

The time it takes a population to double in size from any given numerical point. A country with a 2% growth rate

The time it takes for a cell to divide and double itself. The doubling time of breast cancer cells depends on many things, such as the type of tumor, the resistance of the individual's body, and [..]

Abbreviations: DT Definition: In cell biology, the time it takes for a cell to fully divide (mitosis). In prostate cancer, it means the time that it takes a particular marker of cancer, e.g., the PSA [..]

The number of years it takes for the population of a given area to double its present size, assuming the current population growth rate holds constant.

In biology, the amount of time it takes for one cell to divide or for a group of cells (such as a tumor) to double in size. The doubling time is different for different kinds of cancer cells or tumors.

The number of years required for a specified population to double in size at the current rate of population growth.

The number of years it takes a locale to double in population size.

Used in a demograpic sense to indicate the period which is estimated will pass before population density doubles.

The time it takes for something to increase by a factor of two (as in population growth).