Per*mis"sion (?), n. [L. permissio: cf. F. permission. See Permit.] The act of permitting or allowing; formal consent; authorization; leave; license or liberty granted.

High permission of all-ruling Heaven.

You have given me your permission for this address.

Syn. -- Leave; liberty; license. -- Leave, Permission. Leave implies that the recipient may decide whether to use the license granted or not. Permission is the absence on the part of another of anything preventive, and in general, at least by implication, signifies approval.

• authorisation; consent (especially formal consent from someone in authority)
       Sire, do I have your permission to execute this traitor?
  
• the act of permitting
       Do I have your permission to throw this away?
  
• (computing): flags or ACLs pertaining to a file that dictate who can access it, and how.
       I used the command "chmod 644 /var/www/html/index.htm" to change the file's permission.