The period of time during which an unborn baby develops in the mother's uterus with the average being 38-42 weeks.

The time from breeding or conception of a female until she gives birth to her young.

The period of time a baby is carried in the uterus; full-term gestation is between 38 and 42 weeks (counted from the first day of the last menstrual period).

the period taken from conception to kittening, most usually 65 days.

the period during which the embryo develops in the womb before delivery.

The time from egg implantation in the uterus wall of a female to the birth of the young.

period of time from fertilization of the egg by a sperm (conception) to birth.

The period of time a baby is carried in the uterus is gestation, usually referred to in weeks. Full-term gestation is between 37 and 42 weeks.

refers to the length of time between when a fertilized egg implants in the wall of a female's uterus and birth of the young. In many small mammals, such as various mice, gestation is only about a month, while in larger mammals such as deer, it can be about 7 months.

the amount of time that a female is pregnant.

developmental period of young in the uterus of a mammal

condition or period of carrying a baby in the uterus; approximately 40 weeks long.

term used to describe the development of new life that takes place in the womb between conception and birth.

the period in which offspring are carried in the uterus

(jehs-TA-shuhn) The period of development prior to birth.

The 113 to 116 day period when the sow is pregnant from breeding until farrowing.

The period of time a baby is carried in the uterus; 40 weeks, 10 lunar months, or 280 days.

The length of time a developing baby is carried in the uterus after conception, usually about 40 weeks.

The amount of time it takes for an animal to develop inside its mother's womb.

development of the fetus in the womb from conception to birth.

The period of development of an organism from fertilization of the egg until birth.

The period of time it takes an embryo to develop in the uterus from a fertilized egg to a newborn offspring. Gestation begins with implantation of the embryo in the uterus and ends with birth.

the time it takes a calf to develope from mating to the birth

the period during which an embryo develops (about 266 days in humans)

the state of being pregnant; the period from conception to birth when a woman carries a developing fetus in her uterus

the conception and development of an idea or plan

a period of time between life and birth

the time from fertilization to birth in mammals

the period of time between breeding and birthing or kindling.

the period of development of young from fertilization of the ovum to birth.

the period between conception and birth usually about 280 days.

the amount of time a baby spends growing in the womb.

the period of fetal development from the time of conception until birth.

period of intrauterine growth from conception to birth

the act or period of carrying young in the uterus from conception to birth.

The length of pregnancy from conception to birth.

Period of pregnancy beginning at conception and ending with birth (142-152 days).

The period of time between mating and the birth of the young.

Weeks of pregnancy as computed from the first day of the last menstrual period to the date of delivery.

Process of being carried in the uterus from conception to birth. The length of time a pregnancy has been going on.

The period of development of a fetus in the womb.

pregnancy timespan. For example, "20 weeks gestation" refers to the 20th week of pregnancy. The normal human gestation is 37-42 weeks.

The period between conception and birth during which an organism (or organisms) develop in the uterus, or …..? in the case of Chelonians.

The period of pregnancy in the female. The easiest way to remember is approximately 3 months, 3 weeks, 3 days.

The period of time between fertilization of an egg by a sperm and birth of a baby.

Period of time between fertilization and birth of an animal. Commonly called pregnancy.

Period of intrauterine development from conception to birth, measured in weeks.

For the National Vital Statistics System and the Centers for Disease Control and Prevention's Abortion Surveillance, the period of gestation is defined as beginning with the first day of the last normal menstrual period and ending with the day of birth or day of termination of pregnancy.

The act or period of carrying the young during the pregnancy period; 11 to 11 1/2 months or 330 to 340 days for the mare.

The period of development of the unborn baby, from conception to birth.

How far along the fetus is, determined by the beginning of the mother's last period. Babies are usually born at 40 weeks, but considered full-term from 37 weeks, and extends to 42 weeks.

The period of time from conception to birth.

The duration of pregnancy; the length of time a female mammal bears her young within her uterus.

(jes tay´ shun) [L. gestare: to bear] • The period during which the embryo of a mammal develops within the uterus. Also known as pregnancy.

Period of time between conception and farrowing.

period of development of the young in the womb.

The length of pregnancy. Gestational Diabetes Mellitus (GDM) A type of diabetes mellitus that can occur when a woman is pregnant. In the second half of the pregnancy, the woman may have glucose (sugar) in the blood at a higher than normal level. However, when the pregnancy ends, the blood glucose levels return to normal in about 95 percent of all cases.

jes- ta'shun]- The medical term for pregnancy.

The length of time between fertilzation and delivery of the baby. In humans the average time is 266 days, or about 280 days from the last menstrual period. The gestational age referred to in pregnancy is the calendar time from the last menstrual period, and about two weeks longer than the fertilization age.

The length of pregnancy is called "Gestation."

The period from conception to delivery.

The entire time of pregnancy — from conception to birth.

The period of time that a doe carries young in its uterus. Pregnancy. Normal length is 28-32 days.

The same as pregnancy (150 days in a goat)

The state, process or period of growth and development of a human being or other species in the womb from conception to birth.

in viviparous, or "live bearing' species such as humans, this is the period of time in an offspring's development between fertilization and birth.

The time between conception and birth.

The phase of embryonic and fetal development that occurs in the uterus of the female between conception and farrowing. In swine the gestation period is approximately 114 days.

The duration of pregnancy. In the human, gestation is normally nine months.

the length of time before the baby horse is born. Horses are pregnant for 11 months.

The time from conception to birth. The duration of gestation is measured from the first day of the last normal menstrual period

The nine-month period of pregnancy from conception to birth.

The period between conception and birth which includes embryonic and fetal life.

Age of the fetus in weeks.

The period of time an animal is pregnant. 147 days for a ewe, 3months 3 weeks 3 days for a sow (114 days), 283 days for a cow.

The development of the fetus during pregnancy.

The full period of pregnancy, from fertilization of the egg by a spermatozoon until birth.

the period of carrying developing offspring in the uterus after conception.

1) Pregnancy; 2) the period from implantation of the embryo in the uterus to birth; or 3) the period from conception to birth.

The process of carrying offspring in the womb during pregnancy.

Weeks of pregnancy as reported on the terminated pregnancy report form.

See: pregnancy

The period of intrauterine development.

Gestation refers to the period of development of the young in viviparous animals; the entire period of pregnancy.

The carrying of young in the uterus until birth.

the period of development in the uterus from conception until birth. Also called pregnancy.

The period from conception to birth, during which the developing fetus is carried in the uterus.

period of pregnancy or time of development within the mother.

The period of fetal development in the womb (uterus) from implantation to birth.

Synonymous with pregnancy, gestation refers to the period of time a baby is carried in the uterus counted from the first day of the last menstrual period. Full-term gestation is between 37 and 42 weeks.

Gestation is the length of time for pregnancy. It varies from species to species.

The period of development within the uterus from conception to birth.

The process of carrying young inside the body before birth; the period from implantation of the embryo in the uterus to birth.

Gestation is the carrying of an embryo or fetus inside a female viviparous animal. Mammals during pregnancy can have one or more gestations at the same time (multiple gestations). According to the National Center for Health and Statistics there were over 136,000 multiple human births documented in the United States in 2003(NCHS). http://www.cdc.gov/nchs/fastats/multiple.htm National Center for Health Statistics - Multiple Births The time interval of a gestation is called gestation period, and the length of time the offspring have spent developing in the uterus is called gestational age.