I need to write an announcement for the new chairman of the council for an organization. Would you say he will act as chair for the council through the end of 2009 or is there a different word for this? Thanks
I would probably say something like "he will hold the position of chair... through the end of 2009."
"Act as chair" might be ambiguous, since this verb is also used to talk about someone who does not officially hold the position, but performs the work for some reason anyway. For example, "Kitenok was supposed to be chair, but he got hit by a dumptruck, so LaSonia will act as chair until the end of 2009."
LaSonia, I stand by my original answer in post 2. As explained there, and as sdgraham hinted in the question at the end of his post, there is often a difference between "acting as chair" and "holding the position/title of chair." What you want is something like "he will hold the position of chair."