Unique

Adjective

1. existing as the only one or as the sole example; single; solitary in type or characteristics: a unique copy of an ancient manuscript. 2. having no like or equal; unparalleled; incomparable: Bach was unique in his handling of counterpoint. 3. limited in occurrence to a given class, situation, or area: a species unique to Australia. 4. limited to a single outcome or result; without alternative possibilities: Certain types of problems have unique solutions. 5. not typical; unusual: She has a very unique smile.

Noun

6. the embodiment of unique characteristics; the only specimen of a given kind: The unique is also the improbable. Origin: 1595–1605; < F < L ūnicus, equiv. to ūn(us) one + -icus -ic

Source

Dictionary.com Unabridged (v 1.1) Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.

• See also: Sui Generis

Quote

The personality of mortal man is neither body, mind, nor spirit; neither is it the soul. Personality is the one changeless reality in an otherwise ever-changing creature experience; and it unifies all other associated factors of individuality. The personality is the unique bestowal which the Universal Father makes upon the living and associated energies of matter, mind, and spirit, and which survives with the survival of the morontial soul.