From rotation + -al.

rotational (not comparable)

1. Of, pertaining to or caused by rotation.

   A steam turbine converts heat into rotational motion.

• irrotational

• German: Dreh-, Rotations-
• Italian: rotazionale
• Russian: враща́тельный
• Spanish: rotacional

rotational (plural rotationals)

1. An employee in a job rotation scheme.
   • 1995, Oded Shenkar, Global Perspectives of Human Resource Management, page 87:

     For the new rotationals, the American manager must begin the interview by asking the applicant a few questions of a personal nature about his family, childhood education, philosophy of life, social relationships, hobbies and interests, […]

2. Something, such as a joint, that moves by rotating.