Rare

Early.

Nearly raw; partially cooked; not thoroughly cooked; underdone; as, rare beef or mutton.

Not frequent; seldom met with or occurring; unusual; as, a rare event.

Of an uncommon nature; unusually excellent; valuable to a degree seldom found.

Thinly scattered; dispersed.

Characterized by wide separation of parts; of loose texture; not thick or dense; thin; as, a rare atmosphere at high elevations.

marked by an uncommon quality; especially superlative or extreme of its kind; "what is so rare as a day in June" - J.R.Lowell; "a rare skill"; "an uncommon sense of humor"; "she was kind to an uncommon degree"