Entry 3 senses · 3 variants Webster, 1913 Acuminate · A·cu·mi·nate · IPA /əˈkjuːmɪnət/ a. v. t. v. i. 01 a. Tapering to a point; pointed; as, acuminate leaves, teeth, etc. 1. Tapering to a point; pointed; as, acuminate leaves, teeth, etc. 02 v. t. To render sharp or keen. 1. To render sharp or keen.[R.] 03 v. i. To end in, or come to, a sharp point. 1. To end in, or come to, a sharp point.