reminiscence (n.) Look up reminiscence at Dictionary.com
1580s, "act of remembering," from Late Latin reminiscentia "remembrance, recollection," from reminiscentem (nominative reminiscens), present participle of reminisci "remember, recall to mind," from re- "again" + minisci "to remember," from root of mens "mind," from PIE root *men- "mind, understanding, reason" (see mind (n.)). Meaning "a recollection of something past" is attested from 1811.