The TLA STP has several meanings:

• Standard Temperature and Pressure is a chemistry term for a specific controlled experimental or reaction condition.
• Straight Through Processing is a banking term where a financial transaction is automatically completed without manual intervention.
• 2,5-dimethoxy-4-methylamphetamine is a psychedelic chemical known as DOM, or STP.
• Spanning Tree Protocol is a network protocol providing a loop free topology for a LAN or bridged network.
• Stone Temple Pilots are a popular rock band.
• Shielded Twisted Pair A type of cable.
• Saint Paul, particularly Saint Paul, Minnesota
• Signal Transfer Point is an SS7 packet switch.
• STP is a motor oil company
• STP also stands for Secret Tweaker Pad, from a song named STP by the group Sublime
• Seattle to Portland is also a group bicycle event that rides from Seattle, Washington to Portland, Oregon, sponsored by Group Health and organized by the Cascade Bicycle Club [( http://www.cascade.org/EandR/stp/index.cfm )]