Find the word definition


YSI may refer to:

  • Young Scots for Independence
  • YouSendIt, an online site providing sending of large files
  • Young Social Innovators, a project-based competition for schools in the Republic of Ireland
  • Youth Science Ireland, formerly IAYSG (Irish Association of Youth Science Groups)
  • YSI Inc., a brand of sensors and software for Xylem, Inc.
  • YSi, a silicide composed of yttrium and silicon
  • Parry Sound/Frying Pan Island-Sans Souci Water Aerodrome (IATA code: YSI), a Canadian airport