1. Characterized by or causing no dissipation of energy

Antonym: lossy

Encyclopedia: Lossless

• left-luggage office
• left-of-center
• left-of-centre
• left-slanting
• left-wing
• left-winger
• lefteye flounder
• lefteyed flounder
• leftfield
• lefthander
• leftie
• leftish
• leftism
• leftist
• leftmost
• leftover
• leftovers
• leftward
• lefty
• leg
• leg before wicket
• leg bone
• leg bye
• leg covering
• leg curl