Interfix
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Interfix is a term in linguistics and more specifically, morphology (the study of morphemes, the most basic meaningful entities in word formation). It describes an affix which is placed in between two other morphemes and does not have a semantic meaning. Unlike other affixes, like prefixes (who precede morphemes they are attached to) or suffixes (who are placed after the morpheme they are attached to), an interfix is attached to two different morphemes and thus differs from seemingly similar infix, which is inserted in the middle of one morpheme.
[edit] Examples
[edit] Formation of compound words
In German, the interfix -s- has to be used between certain, but not all nouns, such as Arbeitszimmer (workroom) as opposed to Schlafzimmer (bedroom).
In English, when technical compound words are formed from non-technical roots, an -o- interfix is sometimes used, as o has come to be seen as a connecting vowel: Speed-o-meter, mile-o-meter, by analogy to tacho-meter, odo-meter, and nonsense words such as obscen-o-meter.
In Swedish, compound nouns are written as one word, and interfixes are very common to facilitate pronunciation. S is frequently used in this way, as in fabriksarbetare, which consists of fabrik (factory) and arbetare (worker). Other intefixes are e, as in when familj and far (family and father) become familjefar.
Norwegian is closely related to Swedish, but uses the more moderate interfixing of German. Examples: "arbeid" + "rom" = "arbeidsrom" (workroom), but "fabrikk" + "arbeider" = "fabrikkarbeider" and "familie" + "far" = "familiefar".
