s 1 or S 
(ĕs)
(ĕs)n. pl. s's or S's also ss or Ss
1. The 19th letter of the modern English alphabet.
2. Any of the speech sounds represented by the letter s.
3. The 19th in a series.
4. Something shaped like the letter S.
airplane, Spirit of St. LouisThe single-engine monoplane in which Charles Lindbergh made the first solo nonstop transatlantic flight in 1927 is at the National Air and Space Museum.
- parasitological
- parasitologist
- parasitology
- parasitosis
- parasol
- parasoled
- parasomnia
- parastatal
- parasympathetic
- parasympathetically
- parasympathetic nervous system
- parasympathomimetic
- parasynthesis
- parasynthetic
- paratactic
- paratactical
- paratactically
- parataxis
- paratenic host
- parathion
- parathyroid
- parathyroidectomy
- parathyroid gland
- parathyroid hormone
- paratroop