(1):
(superl.) Nearly raw; partially cooked; not thoroughly cooked; underdone; as, rare beef or mutton.
(2):
(a.) Early.
(3):
(superl.) Not frequent; seldom met with or occurring; unusual; as, a rare event.
(4):
(superl.) Of an uncommon nature; unusually excellent; valuable to a degree seldom found.
(5):
(superl.) Thinly scattered; dispersed.
(6):
(superl.) Characterized by wide separation of parts; of loose texture; not thick or dense; thin; as, a rare atmosphere at high elevations.