1. Between the tropics; equatorial 
2. On the earth, directly beneath the sun

Encyclopedia: Subsolar

• closed universe
• closed-angle glaucoma
• closed-captioned
• closed-circuit television
• closed-class word
• closed-door
• closed-end fund
• closed-end investment company
• closed-heart surgery
• closed-loop system
• closed-minded
• closed-ring
• closedown
• closefisted
• closelipped
• closely
• closely held corporation
• closely knit
• closely-held
• closemouthed
• closeness
• closeout
• closer
• closest
• closet