perfect wave noun1 •A clean, extremely well-formed, hollow or barrelling wave that breaks without closing out and has a smooth, unbroken face allowing for manoeuvrability; a theoretical or imagined wave that is perfect for surfing.What every surfer dreams of finding is a small wave with perfect shape: what we call a perfect wave. The odds against finding that are 10 million-to-one. — 1966 formsperfect waves