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Wiktionary
gestation period

n. the average interval between fertilization and birth of a mammal; ranges from 13 days for the opossum to 626 days for the Indian elephant

WordNet
gestation period

n. the period during which an embryo develops (about 266 days in humans) [syn: gestation]

Wikipedia
Gestation period

For mammals the gestation period is the time in which a fetus develops, beginning with fertilization and ending at birth. The duration of this period varies between species.

Usage examples of "gestation period".

The forty-two mares brought in coldsleep by the colony were all in foal, and the nomads' leaders had accepted the fact that a mare's gestation period was eleven months on Pern as it had been on Earth.

The forty-two mares brought in coldsleep by the colony were all in foal, and the nomads leaders had accepted the fact that a mares gestation period was eleven months on Pern as it had been on Earth.

Their gestation period was abnormally extended because the embryo had to grow virtually to maturity before parturition, and it was rare for an adult to survive the reproduction of more than three offspring.

I've said that the gestation period for an opossum is one of the shortest for any animal -- something like eleven or fourteen days.

For democracy, for the Bill of Rights, it turns out that the gestation period is 200 years.

Pups-bom after a gestation period of four Standard months-were capable of seeing and walking easily within two hours of their birth, and within four weeks could bring down their own food (generally the smaller ground animals).

Green would bear their child in three monthshe was certain she had already taken a natal accelerator, which would shorten the human gestation period by two-thirds.

We do not even know with any certainty how long the gestation period is.

It seems to have a twenty-eight- to thirty-day gestation period, like the phases of the moon.

Out of a group of thirty fertilized ova, only ten survived the first in vitro gestation period.

The gestation period is eleven months, and the first crop of foals don’.

The gestation period for a baby Indian elephant is more than twice that long.

The gestation period for a baby opossum, friends and neighbors, is twelve days.

The gestation period is eleven months, and the first crop of foals don't race until they're two.

Or a gestation period that only lasted a few months but had, by all indications, come to full term.