It seems ironic to be defining the term 'dictionary,' but here we go! Dictionaries are resources for finding word meanings, parts of speech, word origins and even synonyms and antonyms. Dictionaries have definitely evolved over the years. The English language really began with the Anglo-Saxons in Great Britain.
If it is a US Passport, that it is the 9 digit number located in the top corner of the passport info page. In the example below the passport number is 31195855. Other Countries have different types of numbers (usually with letters added) but most often it's in the same place. This Canadian Passport number is AB504966.
When applying for a US passport renewal, the online form (DS-82)  asks you for your Passport Book Number but does not define what  this is, exactly. After finding nothing â¦ definitive online, I  contacted the National Passport Information Center and asked them.  (They have a toll free number. It is 1-877-487-2778.