1. plural of floodtide; the highest level reached by a rising tide, or the period during which the tide is rising.
Usage: nautical; often used in the singular form 'floodtide' in technical contexts
2. a time of peak activity, success, or abundance; a surge or rush of something.
Usage: figurative

Examples

• The floodtides in this harbor occur twice daily.
• During the floodtides, the water level rises several feet.
• The 1990s saw floodtides of investment in technology companies.
• The floodtides of immigration changed the city's demographics.
• Sailors must plan their departures around the floodtides.
• The floodtides of enthusiasm for the new product were remarkable.