Posse is the infinitive of an irregular Latin verb meaning to be able. It can also be used as a noun meaning ability, power, potentiality.Two common phrases that use â¦ posse this way are a posse ad esse - from possibility to reality (literally .. . to being)posse comitatus - the power of the county.hen followed by a noun in the ablative case, the Latin preposition in means in or on.
A contraction stress test checks to see if your baby will stay healthy during contractions when you are in labor. This test includes external fetal heart monitoring . The test is done when you are 34 or more weeks pregnant. During a contraction, the blood and oxygen supply to your baby drops for a short time.
A contraction stress test is done to check: 1  If your baby will stay healthy during the reduced oxygen levels that normally occur during contractions during labor. 2  If the placenta is healthy and can support your baby.