OT

[1] Optical Transceiver

[2] (USENET-Jargon) Off Topic

[3] Overtime

[4] Object Technology

[5] Operating Time (->"NASA Acronym List")

[6] Operational Test (->"NASA Acronym List")

[7] Operational Trajectory (->"NASA Acronym List")

[8] Optical Tracker (->"NASA Acronym List")