Entry 2 senses · 2 variants Webster, 1913 Interdigitate · In·ter·dig·i·tate · IPA v. t. v. i. 01 v. t. To interweave. 1. To interweave.[R.] 02 v. i. To interlock, as the fingers of two hands that are joined; to be interwoven; to commingle. 1. To interlock, as the fingers of two hands that are joined; to be interwoven; to commingle.