perihelion /per-i-hēˈli-ən/

1. The point of the orbit of a planet or a comet at which it is nearest to the sun, opp to aphelion
2. Culmination (figurative)

• riverless
• riverlike
• riverman
• rivermen
• river mouth
• river mouths
• river mussel
• river mussels
• river novel
• river-rat
• river-rats
• rivers
• river sand
• riverscape
• riverscapes
• riverside
• riversides
• river-terrace
• river-terraces
• river-tide
• river-tides
• riverwalk
• riverwalks
• river wall
• river walls