STD: Subscriber Trunk Dialling
What is the full form of STD?
The meaning or full form of STD is "Subscriber Trunk Dialling".
![STD Full Form STD Full Form](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiwSaSQGNsRCopVg4jrh0hlTUo1Z2QgN8kdvTXc80dxBuMzDhFwPg9arYwUV1VD1I6WgyLzwiJQohT-twLVwz94yFPEZV3Uod4Sxh48xT21Nyz5lrfAV3R5GURbK56OBdZghn1B2HZGSSw/s16000-rw/STD+Full+Form+%2528www.tutorialsmate.com%2529.png)
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