venepuncturePronunciation: /ˈvɛnɪˌpʌŋ(k)tʃə, ˈviːnɪ-/ (chiefly North American also venipuncture)Definition of venepuncture noun [mass noun] the puncture of a vein as part of a medical procedure, typically to withdraw a blood sample or for an intravenous injection. Origin: 1920s: from Latin vena 'vein' + puncturevenepuncture in other Oxford dictionaries Definition of venepuncture in the US English dictionary