Ad is short for advantage. The person (or side) with the Ad has a one point advantage over the other person. If that person wins the point, then the game goes to them. If they lose the point, then it goes to Deuce.
ad-out means advantage-out. It usually means that the other person/persons are in advantage of the point, which means if they win the point, they win the game. If you're in ad-out, you need to win 2 more points to win the actual game.
It means when you get deuce and then the next point after that, the non-server wins. So it's the advantage for the 'out' person. 'Out' is when you serve on the left side of the center, and that is the point when you either go back to DEUCE or win the game
It means advantage which means the player is one point away from winning the game, set or match
Advantage
the server
The ad side of a tennis court is the players left side. Or the opponents right side.
International Tennis Federation.
It is either ad in or ad out. If the server won the point it is ad in and if the returner won the point then it is ad out.
It stands for Women's Tennis Association
When serving or returning, there is a deuce side and an ad side. The deuce side is on the right, the ad side is on the left.
ad in, Ashe
The acronym AD stands for Anno Domini.
Ursula Mayes
Domini
'Des tennis' are most probably 'des (chaussures de) tennis' which are tennis shoes in English. That could also stand for 'des (terrains de) tennis', which are tennis courts.