• WordNet 3.6
    • v infix attach a morpheme into a stem word
    • v infix put or introduce into something "insert a picture into the text"
    • n infix an affix that is inserted inside the word
    • ***
Webster's Revised Unabridged Dictionary
    • Infix (Grammar) An element that is inserted into the body of an elemt which it threby modifies, as a letter within a word.
    • Infix Something infixed.
    • Infix To implant or fix; to instill; to inculcate, as principles, thoughts, or instructions; as, to infix good principles in the mind, or ideas in the memory.
    • Infix To set; to fasten or fix by piercing or thrusting in; as, to infix a sting, spear, or dart. "The fatal dart a ready passage found,
      And deep within her heart infixed the wound."
    • ***
Century Dictionary and Cyclopedia
    • infix To fix or fasten in; insert forcibly; implant firmly: as. to infix a dart; to infix facts in the memory.
    • infix To insert additionally or accessorily. See infix, n.
    • n infix Something infixed; in grammar, an element having the value of a suffix or a prefix, but inserted in the body of a word, as practised in some languages.
    • ***
Chambers's Twentieth Century Dictionary
    • v.t Infix in-fiks′ to fix in: to drive or fasten in: to set in by piercing.
    • ***


Webster's Revised Unabridged Dictionary
L. infixus, p. p of infigere, to infix; pref. in-, in + figere, to fix: cf. F. infixer,. See Fix
Chambers's Twentieth Century Dictionary
O. Fr.,—L. infixusin, in, figĕre, fixum, to fix.


In literature:

Nor the old Titan's hate, toward you, ye gods, Infix its vulture talons in my breast!
"Iphigenia in Tauris" by Johann Wolfgang von Goethe
To a large extent the pronouns are incorporated in the verbs as prefixes, infixes, or suffixes.
"On the Evolution of Language" by John Wesley Powell
Thus -m- is the ordinary infixed pronoun of the 1st pers.
"Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 5" by Various
An infixing stillness, now thrust a long rivet through the night, and fast nailed it to that side of the world.
"Pierre; or The Ambiguities" by Herman Melville
And just above the Gem infixed its dart.
"Thalaba the Destroyer" by Robert Southey
That colour was an infixed element of organisation they never suspected.
"Modern Painting, Its Tendency and Meaning" by Willard Huntington Wright
No trace of them is left but in the vices which they introduced, and the habits they infixed.
"The Works of Charles and Mary Lamb" by Charles Lamb

In poetry:

The guilty stroke and torture of the steel
Infix'd, our dauntless Briton scarce perceives:
The wounds his country from his death must feel,
The patriot views; for those alone he grieves.
"To Mr. Harley - Wounded" by Matthew Prior

In science:

This is the essential transformation of the algorithm in which the first dictionary (D1) is built; every lexical entity of the program (atom, functor, number, variable, constant, etc) has an entry in the dictionary; each entry consists of the name, arity and type (prefix, infix, postfix) of the lexical entity.
Efficient Compression of Prolog Programs
The following productions use the maps infix and prefix defined above for tree building (%prec will be discussed below in 4.3).
LR(1) Parser Generation System: LR(1) Error Recovery, Oracles, and Generic Tokens