Corresponding to something of lower dimension under a birational correspondence.
Forming an exception; not ordinary; uncommon; rare.
Better than the average; superior due to exception or rarity.
An exception, or something having an exceptional value
Of or pertaining to the appearance of the world, as opposed to the ultimate nature of the world as it is in itself.
Perceptible by the senses through immediate experience.
Very remarkable; highly extraordinary; amazing.