Noun
(anthropology) The first meeting between people of two previously unknown cultures.
(science fiction) The first meeting between humans and extraterrestrials.
(astronomy) The moment, during an eclipse or transit, when the apparent positions of the two bodies first touch.
Source: en.wiktionary.org[Nietzsche] attributes to himself an extremely vivid and sensitive instinct of cleanliness. At the first contact the filth lying at the base of another's nature is revealed to him. The unclean are therefore ill at ease hi his presence. Georg Brandes
No battle plan survives first contact with the enemy. Not when the enemy is me. Lois McMaster Bujold
No business plan survives its first contact with customers. Steve Blank
My first contact with game theory was a popular article in Fortune Magazine which I read in my last high school year. I was immediately attracted to the subject matter and when I studied mathematics I found the fundamental book by von Neumann and Morgenstern in the library and studied it. Reinhard Selten
If you are going to make first contact with an intelligent alien race,” said Cantabrigia Five, "dropping huge strip-mining robots into their homeland might not be your best move. Neal Stephenson
First and foremost, The Quiet Invasion is a first contact story. What would we do if we actually found evidence of alien life out there? It's also about politics. Sarah Zettel