Classification
Classification was a means of indexing tangible concepts.

The designation for a particle density anomaly was also described as Borg classification 34792. ()

The Sheliak were a non-humanoid, intelligent lifeform, described by Federation standards as beings of the  classification R-3. ()

The contagious illness encountered by the crew of  in 2153 was partially determined by Doctor Phlox to fall within classification of a virus. () A parasite later discovered by The Doctor that was carried by Tuvok was identified as being "clearly a viral parasite of some kind, but its origin and genome classification are not on record." () 

As of 2267, Spock had a A-7 Computer expert classification. ()

As of 2369, 's holodeck computer contained 5,047 classifications of table in its database. When Deanna Troi asked the computer to show a table, it informed her of the number of tables it had on file and requested that she specify the design parameters. ()

See also 
 Planetary classification
 Starship classification
 Vehicle classification index
 Taxonomy

External link 
 

 
ja:クラス