- Either of two angles having a common side and a common vertex.邻角：具有相同边与相同顶点的两个角之一
- specializing
- special jury
- special-needs
- Special Olympics
- special pleading
- special relativity
- specials
- special sense
- special session
- special sessions
- special theory of relativity
- special theory of relativity
- specialties
- specialty
- speciation
- speciations
- specie
- species
- species
- speciesism
- speciesisms
- species-specific
- species–specific
- specif.
- specifiable