transitive verb.
To arrange or organize according to class or category.
transitive verb.
To designate (a document, for example) as confidential, secret, or top secret.
The Century Dictionary and Cyclopedia
To arrange in a class or classes; arrange or group in sets, sorts, or ranks according to some method founded on common characteristics in the objects so arranged.
Synonyms See class, transitive verb
the GNU version of the Collaborative International Dictionary of English
transitive verb.
To distribute into classes; to arrange according to a system; to arrange in sets according to some method founded on common properties or characters.
verb.
To identify by or divide into classes; to categorize
verb.
To declare something a secret, especially a government secret
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
verb.
declare unavailable, as for security reasons
verb.
arrange or order by classes or categories
verb.
assign to a class or kind
Word Usage
"When the local board reopens the registrant's classification, it shall consider the new information which it has received and shall again classify the registrant in the same manner as if he had never before been classified."