Pregnancy: Know Your Terms
- Early Term: 37 weeks through 38 weeks and 6 days.
- Full Term: 39 weeks through 40 weeks and 6 days.
- Late Term: 41 weeks through 41 weeks and 6 days.
- Postterm: 42 weeks and beyond.
The last few weeks of pregnancy have new names. Learn the terms for the home stretch.
Between 37 and 39 weeks, the baby goes through critical development of the: brain, lungs, liver.
Visit https://www.nichd.nih.gov/KnowYourTerms. Graphics: HHS, NIH/NICHD, and NCMHEP logos