triapsidal /trī-apˈsi-d(ə)l/

With three apses (also triapsˈal)

• sunshines
• sunshiny
• sunspot
• sunspots
• sun spurge
• sun spurges
• sunstone
• sunstones
• sunstroke
• sunstrokes
• sunstruck
• sunsuit
• sunsuits
• suntan
• suntanned
• suntans
• suntrap
• suntraps
• sunup
• sunups
• sun visor
• sun visors
• sunward
• sunwards
• sunwise