Definitions

1. adjective

relating to or affecting one side of the face

“The hemifacial paralysis made it difficult for her to smile.”

2. adjective

relating to or affecting the face or facial features

“The hemifacial pain was a rare symptom of the neurological disorder.”

3. noun

a condition affecting one side of the face

“She was diagnosed with a hemifacial spasm that caused twitching on her left cheek.”