- ThamesA river in southern England, flowing 336 km (209 mi.) from Gloucestershire, through Wiltshire, Oxfordshire, Berkshire, Buckinghamshire, Surrey and Greater London, and between Essex and Kent to the Thames Estuary and North Sea.
- isisAny coral of the genus Isis, or family Isididae, composed of joints of white, stony coral, alternating with flexible, horny joints.