Douglas Harper's Etymology Dictionary
"baseball player's turn at the plate," 1912, originally a column heading in statistics tables.
n. 1 (context baseball English) An opportunity to hit. 2 (context baseball English) official at-bats. Batting opportunities minus walks, hit by pitches, and sacrifices
n. (baseball) a turn batting; "he was at bat when it happened"; "he got 4 hits in 4 at-bats" [syn: bat]
Usage examples of "at-bat".
Note that (Note that's another like compulsitory [sic] term) note that the Combatant's Mean-Value megatonnage will change, slightly, from Eschaton to Eschaton, exactly the way a like hitter's season average will alter just a bit from at-bat to at-bat, depending integrally on what he delivered on his last trip to the plate and whatnot.