DNO meaning in Business ?

Answer: What is Do Not Open mean?

Do Not Open: An encyclopedia of the world's best-kept secrets is a book published on October 25, 2007 by Dorling Kindersley and written by John Farndon. Its cover artist was Sophia M Tampakopoulos Turner and was illustrated by Mr Bingo, Khuan Caveman Co., Gilman Calsen, Sheila Collins, Craig Conlan, Alain Goffan, Gennie Haworth, Headcase Design, Irene Jacobs, Neal Murren, Lead Pants, and Ali Pellatt. It was preceded by Pick Me Up and was followed by Take Me Back.

reference

Full Form	Category
Do Not Open	Business
Do Not Operate	Business
Domino Print.	Business
Distribution Network Operator	Business
Dominica News Online	Community
Distribution Networks Office	General
Det Norske Oljeselskap	General
De Nederlandse Opera	General
Distribution Network Operators	General
De Nationale Opera	General
Dudes Night Out	General
Defend New Orleans	General
Donor Network Operator	General
Declaration Of No Objection	General
Do Not Originate	General
Does Not Operate	Governmental
Descending Node Orbit	Governmental
District Nominating Officer	Governmental
Designated Nominating Officer	Governmental
Director of Naval Ordnance	Governmental
Domain Name Optimization	Internet
Do Not Offend	Internet
Deez Nuts Online	Internet
Did Not Obtain	Medical