Pregnancy Medical Terms Every Parent Should Know
By the Nurtured Nest Team · Trusted by UNC Health Rex & 3,000+ families · A program of The Nurture to Bloom Foundation, a 501(c)(3) nonprofit
When you're expecting a baby, medical appointments can feel overwhelming. Your provider may mention terms like gestational diabetes or breech position, and it's easy to nod along while wondering what those words actually mean.
Understanding pregnancy medical terminology doesn't just reduce confusion — it helps you ask better questions and feel more confident in your care. Here are the terms parents hear most, in plain language.
The pregnancy medical terms you'll hear most fall into four groups:
- Prenatal careGestational age, gestational diabetes, preeclampsia, GBS, nonstress test
- Baby's positionHead-down, breech, transverse, engaged, station
- Labor & birthDilation, effacement, water breaking, induction, epidural
- After birthApgar score, skin-to-skin, lochia
Not sure what a term means for you? The best question at any appointment is "Can you explain what that means for me?"
Jump to: Why it matters · Prenatal care · Baby's position · Labor & birth · After birth · Learning in context · FAQs
Why Knowing Medical Terms Matters
When you understand the words your provider uses, you can:
- Ask more specific questions during appointments
- Understand your options and test results
- Feel prepared instead of anxious
- Take a fuller part in your pregnancy and birth planning
"Can you explain what that means for me — and what our options are?"
Providers expect questions. Writing down any unfamiliar word you hear makes it easy to ask before you leave.
Prenatal Care and Testing Terms
Antenatal / Prenatal
Both mean "before birth" and refer to care during pregnancy.
Gestational Age
How far along the pregnancy is, counted in weeks from the first day of your last menstrual period. A full-term pregnancy is about 39–40 weeks.
Gestational Diabetes
A type of diabetes that can develop during pregnancy. Screening is usually done at 24–28 weeks with a glucose test.
Preeclampsia
A pregnancy condition involving high blood pressure, usually after 20 weeks. Call your provider right away for a severe headache, vision changes, or sudden swelling of your face or hands.
Group B Strep (GBS) Test
A swab test done late in pregnancy, usually around 36–37 weeks, to check for a common bacteria. If it's positive, antibiotics during labor help protect your baby.
Nonstress Test (NST)
A painless test that monitors your baby's heart rate as they move, often used later in pregnancy to check on how baby is doing.
Braxton Hicks Contractions
"Practice" tightenings of the uterus that are usually irregular and ease with rest or a change in position. Ask your provider how to tell them apart from labor.
Understanding Your Baby's Position
Head-Down (Cephalic or Vertex)
Your baby is positioned head-first, the most common position near the due date.
Breech
Your baby is positioned bottom- or feet-first instead of head-down. This occurs in about 3–4% of pregnancies near the due date. Your provider may discuss options, such as trying to turn the baby or planning a cesarean.
Transverse
Your baby is lying sideways across the uterus. If your baby can't be turned before labor, a cesarean will usually be recommended.
Posterior (Occiput Posterior)
Your baby is head-down but facing your belly instead of your back. It's often associated with back labor — see our back labor guide.
Engaged (or "Lightening")
Your baby's head settles deeper into your pelvis late in pregnancy. Many parents notice it's easier to breathe, but they feel more pelvic pressure.
Station
How far your baby's head has moved down into the pelvis, usually described from −5 (higher up) to +5 (crowning). "Zero station" means the head is engaged.
Labor and Birth Terms
Contractions
The tightening of the uterus during labor that helps open the cervix and move your baby down.
Dilation & Effacement
Dilation is how open the cervix is (0–10 cm). Effacement is how thin the cervix is (0–100%).
Ruptured Membranes ("Water Breaking")
When the amniotic sac breaks, either as a gush or a slow leak. Call your provider if you think your water has broken.
Induction
Starting labor with medication or other methods, rather than waiting for it to begin on its own.
Pitocin (Oxytocin)
A medication version of the hormone that causes contractions, used to start or strengthen labor.
Epidural
A form of pain relief given through a thin tube in the lower back that numbs much of the lower body during labor.
Want more labor vocabulary? Read Labor Medical Terms Every Parent Should Know.
After-Birth Terms
Apgar Score
A quick check of your baby at 1 and 5 minutes after birth, looking at appearance (color), pulse, grimace (reflexes), activity (muscle tone), and breathing. It shows how baby is adjusting right after birth.
Skin-to-Skin
Placing your baby directly on your bare chest after birth. Learn more in The Science of Bonding.
Lochia
The normal bleeding and discharge after birth, which gradually lightens over several weeks.
For terms you'll hear after baby arrives, see Newborn and Postpartum Medical Terms Every Parent Should Know.
Prefer to search? Look up any term in our free interactive Medical Terminology Guide.
How to Learn These Terms in Context
Definitions help, but terms make the most sense when you hear them as part of the bigger picture: what's happening, why it matters, and what your options are.
Write down words you don't know
Keep a note on your phone during appointments, then ask before you leave.
Ask what it means for you
"Can you explain what that means for me, and what our options are?" works for almost anything.
Bring your partner into it
Two people listening catch more — and your partner may be the one asking questions during labor.
Connect terms to your birth plan
Terms like induction, epidural, and monitoring turn into real decisions. Thinking them through ahead of time makes labor feel less rushed.
From the Nurtured Nest learning platform
Like having medical terms explained in plain language?
That's what our full Childbirth + Postpartum Course does best. Expert-led lessons explain what your care team is talking about at every stage — labor, pain management, induction, cesarean birth, partner support, and recovery — so you can follow the conversation and ask better questions.
- Partner access included
- 52 short lessons
- Questions answered in 24 hours
I felt like I knew what the doctors were talking about every step of the way — it made a huge difference in my childbirth and postpartum experience.
Frequently Asked Questions
What's the difference between prenatal and antenatal?
Nothing — both mean "before birth." "Prenatal" is more common in the U.S., while "antenatal" is often used in other countries.
When is the gestational diabetes test?
Screening is usually done between 24 and 28 weeks, though your provider may test earlier if you have certain risk factors. Ask how your practice does the test and whether you need to prepare.
What does "station" mean in labor?
Station describes how far your baby's head has moved down into the pelvis, usually from −5 (higher) to +5 (crowning). Zero station means the head is engaged in the pelvis.
What should I do if I don't understand what my provider said?
Ask! "Can you explain what that means for me?" is always a fair question. You can also ask them to write the term down, or bring your partner to help listen. In the Childbirth + Postpartum Course, you can also send questions to our educators and hear back within 24 hours — though for anything about your own health, your provider is the right person to ask.
Ready for your next step?
Two ways to feel more prepared
Birth Planning Guide
For couples ready to turn these terms into a clear birth plan.
$17
- 23-page guided workbook
- B.R.A.I.N. tool and partner pages
- One-page hospital summary
Childbirth + Postpartum
For couples who want every term and choice explained.
$199
- 52 short lessons · 5+ hours · 22 guides
- Partner access and questions answered in 24 hours
- 12 months of access
Eligible purchases may be reimbursable through an HSA or FSA · Preparing for the whole first year? See the Complete Pregnancy to Baby Bundle.
