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)

• ictus
• ictuses
• ICU
• icy
• icy-pearled
• -id
• i.d.
• id
• id.
• I'd
• ID
• IDA
• Ida.
• -idae
• Idaean
• Idaean vine
• Id al-Adha
• Id al-Fitr
• Idalian
• idant
• idants
• I dare say
• I daresay
• IDB
• ID card