Preposition: of

• pregnancy: All patients were beyond the first trimester of pregnancy at the initiation of therapy.

• gestation: Population Fourteen normal pregnant women followed through the three trimesters of gestation.

Converse of object

• call: Pregnancy is broken down into three phases, which are called trimesters.

• combine: The Antenatal Screening Service offer the Integrated test, first trimester Combined test and second trimester Quadruple test.

• compare: Only 8.7 % of controls had ultrasound in the first trimester compared with 15.7 % of cases.

Adjective modifier

• third: In your third trimester, your baby's brain really starts to develop.

• 3rd: The majority present in their 2nd or 3rd trimester.

• second: Take a well earned break Your second trimester is the ideal time to get away.

• 2nd: They found lopinavir AUC was low with standard dosing during the 2nd trimester.

• first: The first trimester is the period of greatest risk for the baby.

• 1st: Not recommended for use in your 1st Trimester of pregnancy.

Modifies a noun

• miscarriage: Higher levels of endogenous interferon gamma were found in women with recurrent first trimester miscarriage compared to women with normal pregnancy.

• abortion: Moreover, 44 percent offered training for second trimester abortions, compared with seven percent in 1992.

• serum: Twins and insulin dependent diabetes mellitus Second trimester serum marker levels are raised in twin pregnancies.

• screening: Data on the value of first trimester anomaly screening are lacking.

• marker: Twins and insulin dependent diabetes mellitus Second trimester serum marker levels are raised in twin pregnancies.

• pregnancy: Trimester divide pregnancy into three periods, each about 13 weeks long.

Noun used with modifier

• lecture: Each of the lecture block trimesters consists of a three-month period.

• block: Each of the lecture block trimesters consists of a three-month period.

• st: Revue d'économie industrielle, No. 67, 1 st trimester.