1. An acronym or abbreviation so old or familiar that few remember what its letters stand for, such as radar or BASIC (anachronistic + acronym)

Encyclopedia: Anacronym

• fencer's mask
• fencesitter
• fencing
• fencing mask
• fencing material
• fencing stick
• fencing sword
• fend
• fend for
• fend off
• fender
• fender-bender
• fenestella
• fenestra
• fenestra cochleae
• fenestra of the cochlea
• fenestra of the vestibule
• fenestra ovalis
• fenestra rotunda
• fenestra vestibuli
• fenestral
• fenestrate
• fenestrated
• fenestration
• feng-shui