IDENTICAL
identical, monovular
(adjective) (of twins) derived from a single egg or ovum; “identical twins are monovular”
identical, superposable
(adjective) coinciding exactly when superimposed; “identical triangles”
identical
(adjective) having properties with uniform values along all axes
identical, indistinguishable
(adjective) exactly alike; incapable of being perceived as different; “rows of identical houses”; “cars identical except for their license plates”; “they wore indistinguishable hats”
identical, selfsame, very
(adjective) being the exact same one; not any other:; “this is the identical room we stayed in before”; “the themes of his stories are one and the same”; “saw the selfsame quotation in two newspapers”; “on this very spot”; “the very thing he said yesterday”; “the very man I want to see”
Source: WordNet® 3.1
Etymology
Adjective
identical (comparative more identical, superlative most identical)
(not comparable) Bearing full likeness by having precisely the same set of characteristics; indistinguishable.
(not comparable) Not different or other; not another or others; not different as regards self; selfsame; numerically identical.
(not comparable, biology) Of twins, sharing the same genetic code.
(not comparable, mathematics) Exactly equivalent.
(comparable, rare) Approximating or approaching exact equivalence.
Usage notes
• In mathematics, this adjective can be used in phrases like “A and B are identical”, “A is identical to B”, and, less commonly, “A is identical with B”.
• Adverbs often used with "identical": absolutely, almost, nearly, practically, virtually, substantially.
Synonyms
• (bearing full likeness): same
• (selfsame): same, selfsame
Antonyms
• contrasting
• different
• distinct
• non-identical
Coordinate terms
• (of twins): dizygotic
Noun
identical (plural identicals)
(usually, pluralized, chiefly, philosophy) Something which has exactly the same properties as something else.
An identical twin.
Anagrams
• ctenidial, diclinate, dinetical
Source: Wiktionary
I*den"tic*al, a. Etym: [Cf. F. identique. See Identity.]
1. The same; the selfsame; the very same; not different; as, the
identical person or thing.
I can not remember a thing that happened a year ago, without a
conviction . . . that I, the same identical person who now remember
that event, did then exist. Reid.
2. Uttering sameness or the same truth; expressing in the predicate
what is given, or obviously implied, in the subject; tautological.
When you say body is solid, I say that you make an identical
proposition, because it is impossible to have the idea of body
without that of solidity. Fleming.
Identical equation (Alg.), an equation which is true for all values
of the algebraic symbols which enter into it.
Source: Webster’s Unabridged Dictionary 1913 Edition