A yoctosecond is one trillionth of a trillionth of a second.

He always tries to run away to avoid problems.

She is studying traditional Chinese medicine and is utilizing that knowledge.

He is an expert in psychiatry.

He is an excellent medical student.

He was forced to quit sports for medical reasons.

My grandfather is being seen by a specialist in geriatric medicine.

He has a very passive personality.

You passed the exam, well done!

He is always thought to be a greedy person.