The intervening time; as, in the meantime (or mean time)., In the intervening time; during the interval.
Yes, it is. It is an adverb of time meaning "concurrently."
A few synonyms (same meaning words) for while are As, Meanwhile, and as well as. Phrases are (Meanwhile back at the ranch) (On the other hand) and (Either or) could also work, but in only some cases. Whilst
Yes, it is correct to say "in the meanwhile" to mean "in the meantime" or "meanwhile."
...Meanwhile was created in 1992.
"Meanwhile, the dog has off and stolen and stolen the meat!" "Meanwhile, as Jenny and Lucas were at the park..."
Meanwhile has two syllables.
Meanwhile, the cat was busy licking her fur. She has meanwhile immersed herself in yet another book.
Meanwhile is an adverb: Bob worked overseas. Ann, meanwhile, took care of the children on her own. It can be a noun too: I hope to be a doctor eventually. In the meanwhile, I am working in a factory.
Meanwhile, someone was breaking into my house!
The second verse of the song Meanwhile by George Strait is meanwhile back in the back of my memory, you're still dancing with me and I'm holding you once again, meanwhile.
"Bachelor" meant a young man in training to be a knight, and eventually the meaning evolved to an unmarried man. Meanwhile, the training aspect of the meaning also moved from knighthood to college.
The term "base camp" usually applies on, say, a mountain expedition. It is the place from which you begin your climb, and where you can meanwhile store some of your belongings.