Phono-semantic matching
A term introduced by Professor Ghil'ad Zuckermann, University of Cambridge. It refers to camouflaged borrowing in which a foreign word is matched with a phonetically and semantically similar pre-existent native word/root. Phono-semantic matching, a.k.a. PSM, may alternatively be defined as the entry of a multisourced neologism that preserves both the meaning and the approximate sound of the parallel expression in the source language, using pre-existent words/ roots of the target language.
An example is the Taiwan Mandarin word 威而刚 wēiérgāng (weiergang), which literally means "powerful and hard" and refers to Viagra, the drug for treating impotence in men, manufactured by Pfizer.
Viagra, which was suggested by Interbrand Wood (the consultancy firm hired by Pfizer), is itself a multisourced neologism, based on Sanskrit vyāghráh "tiger" but enhanced by the words vigour (strength) and Niagara (free/forceful flow).
Source: ZUCKERMANN, Ghil`ad 2003. Language Contact and Lexical Enrichment in Israeli Hebrew. London-New York: Palgrave Macmillan. (Palgrave Studies in Language History and Language Change, Series editor: Charles Jones). Hardback, 304 pages, 216mm x 138mm, ISBN: 140391723X.