Millefiori is a glasswork technique which produces distinctive decorative patterns on glassware.
The term millefiori is a combination of the Italian words "mille" (thousand) and "fiori" (flowers). Apsley Pellatt (in his book "Curiosities of Glass Making") was the first to use the term "millefiori", which appeared in the Oxford Dictionary in 1849. The beads were called mosaic beads before then. While the use of this technique long precedes the term millefiori, it is now frequently associated with Venetian glassware.