IPA: /ˌvɛnɪˈpʌŋkʧər/
KK: /vɛnɪˈpʌŋkʧər/
The act of puncturing a vein to draw blood or give medicine.
The nurse performed a venipuncture to collect a blood sample for testing.
Venipuncture is formed from "ven" (from Latin "vena", meaning vein) and "puncture" (from Latin "punctura", meaning a prick or a hole). The word describes the act of making a puncture in a vein, typically for the purpose of drawing blood or administering medication.
Think of 'vein' ('ven') and 'prick' ('puncture') to remember that venipuncture means making a small hole in a vein.