Dunamis is an ordinary Greek word for possibility or capability. Depending on context, it could be translated potency, potential, capacity, ability, power, capability, strength, possibility, force and is the root of modern English words dynamic, dynamite, and dynamo.
Theodora Teddy Altman, M.D. is a fictional character from the ABC medical drama Grey's Anatomy, portrayed by actress Kim Raver. She was an attending cardiothoracic surgeon at Seattle Grace Mercy West Hospital, the fictional institution where the show is set.
The episode begins with Seattle Grace Mercy West Hospital's new interns, Dr. Shane Ross (Gaius Charles), Dr. Jo Wilson (Camilla Luddington), Dr. Heather Brookes (Tina Majorino), and Dr. Stephanie Edwards (Jerrika Hinton), expressing fear of Meredith Grey, who is now an attending general surgeon.