Truncate/ˈtrʌŋkeɪt/ Definition 1 of 4Pro Tip 1/2Partial Removal Truncate means cutting off only a part of something, not its entirety. We had to truncate the guest list to fit the venue capacity. Pro Tip 2/2Specific Contexts The term is mostly used in editing, writing, and speaking where content needs shortening. The speaker truncated his lecture due to time constraints.