One of three periods in which the pregnancy is divided. Each trimester lasts approximately three months. The first trimester lasts from the first day of the last menstrual period to the end of the thirteenth week. It embraces the embryonic stage of development. The second trimester lasts from week fourteen to week twenty six and marks the period of rapid fetal growth. The third trimester lasts from the twenty eighth week through to delivery.
Literally, a three-month period of time; so the nine months of pregnancy are divided into the first, second and third trimesters. Most miscarriages take place in the first trimester (up to 12 or 13 weeks). Pregnancies that reach the third trimester (beyond 27 weeks) have an increasingly good chance of being viable (though nowadays, with intensive care, survival has occurred from about 24 weeks).
Pregnancy is divided into three trimesters: weeks 0-12 when your baby's major organs are developing; weeks 12-28, when your baby grows and his organs mature; and weeks 29-40, when your baby continues to develop and gain weight before he is born.
A third of a pregnancy. Trimesters divide pregnancy into three 13-week periods. The development and potential problems of pregnancy and the foetus vary by trimester. Ultrasound Scan In ultrasound procedures, high-frequency sound waves are used to create a moving image on a screen. Ultrasound images can be used to diagnose infertility and other medical problems.
A period of one-third of the total. Pregnancy is divided into three trimesters. The first trimester is 0-13 weeks of gestation. The second trimester is 14-26 weeks of gestation. The third trimester is 27 weeks gestation until birth.
A period lasting nominally 3 months. A human pregnancy is often divided into three trimesters, from fertilization to birth. U.S. Laws restricting abortions often differ among the trimesters. Canada has no laws regulating abortions.
The nine months of pregnancy is traditionally divided into three trimesters: distinct periods of roughly three months in which different phases of fetal development take place. See the entire definition of Trimester
One of the 3-month periods into which pregnancy is divided. The first trimester is 0â€“13 weeks of gestation, the second trimester is 14â€“26 weeks of gestation and the third trimester is 27 weeks of gestation until birth.
The standard period of teaching and assessment for courses at Victoria, usually of 12 to 13 weeks. The year is divided into three trimesters, the first from March to June, the second from July to October, and the third from November to February. The third trimester is also referred to as the summer trimester. [1+2/3] denotes a course taught over the first two trimesters, [1/3] the first trimester, [2/3] the second and [3/3] the third.
one of three periods during a pregnancy. Pregnancy is unequally divided into three trimesters. The first trimester goes from conception up to 14 weeks, the second trimester from 14-28 weeks and the third trimester from 28 weeks to delivery.
An academic calendar period of about 15 weeks. Three trimesters make up one year. Students normally progress by attending two of the trimesters each year and in some colleges can accelerate their programs by attending all three trimesters in one or more years.