1. words, lines, or passages inserted between the lines of a written or printed text
Usage: plural form; often used in scholarly or editorial contexts
2. the act or process of writing or inserting text between existing lines
Usage: plural form; formal or technical usage

Examples

• The manuscript contained numerous interlineations made by the editor.
• Medieval scribes often added interlineations to clarify difficult passages.
• The document's interlineations revealed the author's second thoughts.
• Scholars examined the interlineations to understand the text's revision history.
• The letter was difficult to read due to hasty interlineations between the lines.