1. Moving or directed toward the centre or axis, especially when spinning or travelling in a curve

See also: centripetal

• silly season
• silo
• siloxane
• Silphium
• Silphium laciniatum
• silt
• silt up
• siltstone
• silty
• Silurian
• Silurian period
• silurid
• silurid fish
• Siluridae
• siluriform fish
• Siluriformes
• Silurus
• Silurus glanis
• silva
• silvan
• Silvanus
• silver
• silver age
• silver ash
• silver beech