Newborn: The First Twenty-Eight Days
A newborn is a very recently born baby. Medicine gives the word a precise span, which is why it appears in official statistics.
A newborn is a baby in the first weeks of life. Medicine is precise where ordinary speech is not: the *neonatal* period is the first twenty-eight days after birth, and neonatal mortality is measured over exactly that window. The Latin-derived *neonate* means the same thing as the plain English word.
- A very recently born baby. *A healthy newborn.*
- Newly born. *A newborn lamb.*
- Neonate — the medical term. *Care of the neonate.*
Word forms
| Form | Word | Example |
|---|---|---|
| Noun | newborn | Holding the newborn. |
| Plural | newborns | Two newborns. |
| Adjective | newborn | A newborn calf. |
| Medical | neonate | Neonatal unit. |
| Adjective | neonatal | Neonatal care. |
How it is used in a sentence
- Newborns sleep in short stretches.Around sixteen hours a day, in pieces.
- The neonatal unit takes babies born early.Hospital use.
- A newborn's eyesight is blurry at first.Focus improves over months.
Stages of early life
- Neonate / newborn — the first 28 days
- Infant — roughly the first year
- Toddler — from walking to about three
- Preterm — born before 37 weeks
- Term — born between 37 and 42 weeks
A compound of *new* and *born*, in use since Old English. The medical *neonate* was built later from Greek *neos*, new, and Latin *natus*, born.
How long is someone a newborn?
In medicine, twenty-eight days. In ordinary use the word stretches to a couple of months.
Newborn or infant?
Newborn is the first weeks. Infant covers roughly the first year, and in some legal contexts much longer.