1. Having no ribs or no visible ribs

Antonym: ribbed

• TPN
• tra-la
• tra-la-la
• trabeate
• trabeated
• trabecula
• trabecular
• trabeculate
• Trablous
• trace
• trace detector
• trace element
• trace fossil
• trace program
• traceable
• tracer
• tracer bullet
• tracery
• trachea
• tracheal
• tracheal vein
• tracheid
• tracheitis
• Trachelospermum
• Trachelospermum jasminoides