"remember, recover knowledge of," 1550s, from Latin recollectus, past participle of recolligere, literally "to collect again," from re- "again" (see re-) + colligere "gather" (see collect). Related: Recollected; recollecting. The pronunciation is based on recollection.
"to collect or gather again," c.1600, from re- + collect (v.). Earlier simply "to collect" (1510s). Related: Re-collected; re-collecting.