Adjective

(en adjective)

(not comparable) Bearing full likeness by having precisely the same set of characteristics; indistinguishable.

* {{quote-book, year=1911, title=Encyclopædia Britannica, chapter=

, passage=By this means as many absolutely identical plates can be produced as may be required, and being hardened they will yield a very large number of prints without any appreciable deterioration.}}

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(not comparable) Not different or other; not another or others; not different as regards self; selfsame; numerically identical.

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* {{quote-book, year=1922, title=, by=W. C. Firebaugh, author=Petronius,

passage=Nor could I myself look upon this man without some emotion, for he seemed to be the identical  person who had picked up the ragged tunic in the lonely wood, and, as a matter of fact, he was!}}

(not comparable, biology) Of twins, sharing the same genetic code.

(not comparable, mathematics) Exactly equivalent.

(comparable, rare) Approximating or approaching exact equivalence.

* 1788 , , XLI:

The terms of Article 8th are still more identical .

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Adjective

(-)

Of the same kind; alike, similar.

Having the same composition throughout; of uniform make-up.

* 1946 , (Bertrand Russell), History of Western Philosophy , I.25:

Their citizens were not of homogeneous origin, but were from all parts of Greece.

(chemistry) in the same state of matter.

(mathematics) Of which the properties of a smaller set apply to the whole; scalable.

The function ''f(x,y)=x²+y²'' is homogeneous of degree 2 because ''f(''?''x,''?''y)=''?''²f(x,y)''.

(proscribed)