1. In a series.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• seriouly,
• seriesly,
• serisully,
• parially,
• arially,
• serisly,
• certially,
• gerally,
• seriasly,
• soially,
• severially,
• sertaily,
• berally,
• sereasly,
• serinly,
• serioslly,
• seriosly,
• seriall,
• seriallyy,
• seriolla

• seriola,
• serial.

The adjective form of the word "serially" is "serial".