systole /sisˈto-lē or -tə-lē/

1. Rhythmical contraction, esp of the heart, opp to diastole (physiology)
2. Collapse of the nucleus in mitosis
3. The shortening of a long syllable (grammar)

• self-sameness
• selfsames
• self-satisfaction
• self-satisfied
• self-satisfying
• self-schooled
• self-sealing
• self-seeder
• self-seeders
• self-seeker
• self-seekers
• self-seeking
• self-service
• self-services
• self-serving
• self-severe
• self-shielding
• self-slain
• self-slaughter
• self-slaughtered
• self-slayer
• self-slayers
• self-sovereignties
• self-sovereignty
• self-sow