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

• unitise
• unitive
• unitization
• unitize
• unity
• univalent
• univalve
• univariate
• universal
• universal agent
• universal donor
• universal gas constant
• universal gravitational constant
• universal joint
• Universal Product Code
• universal proposition
• universal quantifier
• universal resource locator
• universal set
• universal solvent
• universal suffrage
• universal time
• universal veil
• universalise
• universalism