1300-50;Middle Englishremembren < Old Frenchremembrer < Late Latinrememorārī, equivalent to re-re- + Latinmemor mindful (see memory) + -ārī infinitive suffix
1. Remember, recall, recollect refer to bringing back before the conscious mind things which exist in the memory. Remember implies that a thing exists in the memory, though not actually present in the thoughts at the moment: to remember the days of one's childhood. Recall implies a voluntary effort, though not a great one: to recall the words of a song. Recollect implies an earnest voluntary effort to remember some definite, desired fact or thing: I cannot recollect the exact circumstances.
c.1300, from O.Fr. remembrer (11c.), from L. rememorari "recall to mind, remember," from re- "again" + memorari "be mindful of," from memor "mindful" (see memory). Replaced native gemunan. The noun remembrance in the sense of "keepsake, souvenir" is recorded from 1425. Remembrance Day, the Sunday nearest Nov. 11 (originally in memory of the dead of World War I) is attested from 1921.