On chemtrailcentral, thereâs actually a thread about the history of chemtrails. There people give their recollections of how it all started. Most date it to late 1998 or 1999. A few people report earlier contrails (1989, 1991) , and then surmise it must have started earlier.
Webster Dictionary(3.00 / 1 vote)Rate this definition: Advise(verb) to give advice to; to offer an opinion, as worthy or expedient to be followed; to counsel; to warn. Advise(verb) to give information or notice to; to inform; -- with of before the thing communicated; as, we were advised of the risk.
Definition of advise for English Language Learners. : 1  to give an opinion or suggestion to someone about what should be done : to give advice to (someone) : 2  to recommend or suggest (something) : 3  to give information to (someone)