anus
anatomy
terminal opening of the anal canal, the portion of the digestive tract through which fecal material (feces) is excreted. See also rectum.- speed of sound
- Speed of sound in selected gases
- Speed of sound in selected liquids
- Speed of sound in selected solids
- speedometer
- speed skating
- speed skiing
- speedway racing
- speedwell
- Speedwriting
- Speelman, Cornelis Janszoon
- Spee, Maximilian, Graf von
- Speenhamland system
- Speer, Albert
- Speke, John Hanning
- speleology
- spell
- spelling bee
- Spelman College
- Spelman, Sir Henry
- spelter
- Spelthorne
- Spelvin, George
- Spemann, Hans
- Spence, A. Michael