1-month checkup (for a baby)
Refers to the routine health examination for an infant about one month after birth, typically conducted at a pediatric clinic or hospital.
Next week I'm taking the baby for the one-month checkup.
Standard kanji spelling using the ヶ counter.
Variant using the full-width digit １ instead of the kanji 一.
Compound of 一ヶ月 (one month) and 検診 (medical examination).