id.

/IH1 D/
pronoun
  1. 1

    The same.

noun
  1. 1

    The act of identifying, or proving to be the same.

    โ€œMuch education and experience is required for proper identification of bird speciesโ€

  2. 2

    The state of being identified.

  3. 3

    A particular instance of identifying something.

    โ€œinformation necessary to make a good identificationโ€

  4. 4

    A document or documents serving as evidence of a person's identity.

    โ€œThe authorities asked for his identificationโ€

  5. 5

    A feeling of support, sympathy, understanding or belonging towards somebody or something.

noun
  1. 1

    Someone who identifies; a person who establishes the identity of.

  2. 2

    Something that identifies or uniquely points to something or someone else.

  3. 3

    A guidebook that helps determine the specific class of an object (such as a mushroom, herb, fish, bird, drug, or mineral), or its individual identity (such as that of a star).

  4. 4

    (operating systems) A formal name used in source code to refer to a variable, function, procedure, package, etc. or in an operating system to refer to a process, user, group, etc.

  5. 5

    A code that distinguishes a particular element from all other elements in a document.

  6. 6

    A primary key.

noun
  1. 1

    A document which may be used to prove a person's identity.

Source: https://en.wiktionary.org/wiki/id., https://en.wiktionary.org/wiki/idem, https://en.wiktionary.org/wiki/identification, https://en.wiktionary.org/wiki/identifier, https://en.wiktionary.org/wiki/identity%20document