Word Study
king-size
CIDE DICTIONARY
king-size, adj.
- extra large; as, a king-size bed. [WordNet 1.5]" A king-size bed is the largest size generally sold commercially; it is larger than a
queen-size , which in turn is larger than afull-size (or double) bed, and that in turn is larger than atwin-size (or single) bed. The mattress for a king-size bed is typically about 76 inches wide and 80 inches long." [PJC] - Of or pertaining to a king-size bed; suitable for a king-size bed; as, a king-size bedcover. [PJC]
For further exploring for "king-size" in Webster Dictionary Online