Dickerson elected free agency Monday.
Dickerson cleared waivers Saturday and was outrighted to Triple-A Gwinnett.
Atlanta designated Dickerson for assignment Thursday.
Dickerson will serve as Atlanta's designated hitter and No. 6 batter in Wednesday's game against the Cubs, Justin Toscano of The Atlanta Journal-Constitution reports.
Dickerson is out of the lineup for Wednesday's game against the Dodgers.
Dickerson is out of the lineup for Tuesday's game against the Nationals.
Dickerson is out of the lineup for Monday's game against the Nationals.
Dickerson is not in the lineup for Friday's game against the Reds.
Dickerson signed a one-year, $1 million contract with Atlanta on Wednesday.
Dickerson was designated for assignment by the Giants on Monday, Alex Pavlovic of NBC Sports Bay Area reports.