interregnum /in-tər-regˈnəm/

1. The time between two reigns
2. The time between the cessation of one and the establishment of another government
3. Any breach of continuity in order, etc

• synthesiser
• synthesisers
• synthesises
• synthesis gas
• synthesis gases
• synthesising
• synthesist
• synthesists
• synthesize
• synthesized
• synthesizer
• synthesizers
• synthesizes
• synthesizing
• synthetic
• synthetical
• synthetically
• synthetic aperture radar
• synthetic aperture radars
• synthetic drug
• synthetic drugs
• syntheticism
• syntheticisms
• synthetic languages
• synthetic philosophy