Definition of ballotini in English:

ballotini

Pronunciation /ˌbaləˈtiːni/

noun

(also ballottini)
  • With plural agreement. Small particles or beads of glass used for a variety of industrial and scientific applications.

Origin

1950s; earliest use found in Biochimica et Biophysica Acta. From Italian ballottini, plural of ballottino small ball, pellet from ballotta + -ino.