1. (astronomy) the point in the orbit of one body of a binary system at which it is farthest from the centre of mass of the system
   - apocenter [US]

Derived forms: apocentres

• Archosargus probatocephalus
• Archosargus rhomboidalis
• archosaur
• Archosauria
• archosaurian
• archosaurian reptile
• archpriest
• archway
• Arcidae
• arciform
• arcminute
• arco
• arcsec
• arcsecant
• arcsecond
• arcsin
• arcsine
• arctan
• arctangent
• arctic
• Arctic Archipelago
• Arctic char
• Arctic Circle
• Arctic fox
• Arctic ground squirrel