univerbation
The diachronic process of forming a new single word from a fixed expression of several words.
countable, uncountable
Lexicalization and grammaticization compared In Section 3, it was pointed out that there are two kinds of lexicalization which can be usefully compared with grammaticization, i.e. fossilization and univerbation. The discussion and examples in this section will be confined to the more general and widespread of these two types, i.e. univerbation (the emergence of new lexical entries from collocations), primarily in order to keep the presentation simple and straightforward.
A new word formed by this process.
countable, uncountable
The two suppletive pronominal paradigms *se/o- ~ *te/o- ‘that’ and *i-/ei̯- ~ *e/o- ‘this’ are continued in many IE [Indo-European] languages, both as simplicia and as univerbations with other pronouns and adverbs[.]
Where it comes from
Probably from French univerbation, from uni- (“uni-”) + Latin verbum (“word”) + French -ation (“-ation”).
Adapted from the Wiktionary entry univerbation (CC BY-SA 4.0).