Something that is extraordinary: often troublesome, difficult or problematic, but sometimes extraordinary in a positive sense.
A fact or event considered very unusual, curious, or astonishing by those who witness it.
An experienced object whose constitution reflects the order and conceptual structure imposed upon it by the human mind (especially by the powers of perception and understanding).
A thing or being, event or process, perceptible through senses; or a fact or occurrence thereof.
A knowable thing or event (eg by inference, especially in science)
A kind or type of phenomenon (sense 1 or 2)
A wonderful or very remarkable person or thing.
Appearance; a perceptible aspect of something that is mutable.