VAC, short for vacuum, is a valid three-letter word in Scrabble and similar word games. It refers to a space entirely devoid of matter. For example, in physics, a perfect vacuum is theoretically possible but difficult to achieve in practice.
The validity of this short word opens up strategic possibilities in gameplay. It allows players to utilize limited board space efficiently, particularly in situations requiring short words to connect with existing letters or to maximize points on premium squares. Knowing its validity can significantly impact a player’s strategy, especially in close games. Historically, the acceptance of abbreviations like “vac” reflects the evolution of lexicons used in word games to keep pace with common language usage.