| Acronym | Definition |
|---|
| XIS➣Xploring Inner Space |
| XIS➣Extensible Information Server |
| XIS➣Xerox Imaging Systems |
| XIS➣Xtreme Internet Solutions |
| XIS➣X-ray Imaging Spectrometer |
| XIS➣Xerox Imaging Systems (now Nuance Communications; Burlington, MA) |
| XIS➣Xiamen International School (China) |
| XIS➣Extensible Information Systems (Polexis, Inc.) |
| XIS➣XML Integration Services |
| XIS➣X-ray Isochromat Spectroscopy |
| XIS➣Xenon Infrared Searchlight |
| XIS➣XACCT Interface Server (XACCT) |
| XIS➣XML (Extensible Markup Language) Intranet System (software) |
| XIS➣Xapakdy Integrations Systems (York, PA) |
| XIS➣Xtranet Internet Services (South Africa) |