identity

Definitions


[ʌɪˈdɛntɪti], (Noun)

Definitions:
- the fact of being who or what a person or thing is
(e.g: he knows the identity of the bombers)

- a close similarity or affinity
(e.g: an identity between the company's own interests and those of the local community)

- a transformation that leaves an object unchanged

- the equality of two expressions for all values of the quantities expressed by letters, or an equation expressing this, e.g. (x + 1)² = x ² + 2x + 1


Phrases:

Origin:
mid 16th century (in the sense ‘quality of being identical’): via French from late Latin identitas, from Latin idem ‘same’




definition by Oxford Dictionaries