1. inserted between other things or parts
Usage: formal
2. added to a calendar to harmonize it with the solar year
Usage: technical
3. situated between layers of rock or other geological formations
Usage: geology

Examples

• The intercalated chapters provided background information between the main narrative sections.
• February 29th is an intercalated day that occurs every four years.
• The geologist studied the intercalated limestone layers in the cliff face.
• Intercalated discs connect cardiac muscle cells in the heart.
• The manuscript contained several intercalated poems between prose passages.
• Ancient calendars often required intercalated months to stay aligned with seasons.
• The intercalated volcanic ash layer helped date the surrounding rock formations.