keynumber

noun

UK /ˈkiːˌnʌmbə/

US /ˈkiˌnʌmbər/

A keynumber is a special number that helps you find or open something.

Write your keynumber on the form so the office can find your file.

SYNONYMS

code number identification number reference number access code ID number

RELATED WORDS

key number password code identifier

OTHER MEANINGS

2. A number printed on a map or chart that explains what its symbols mean.

Check the keynumber in the corner of the map to see what the blue lines are.

3. A number used to sort or group items in a list or system.

Each book in the library has a keynumber that tells you where it belongs.

4. A number that unlocks a lock or device when typed in.

He typed the keynumber into the keypad and the door opened.

5. A main or essential number in a set of data.

The keynumber in the report shows the total sales for the year.