GIC

noun GICs

1. abbreviation, countable, initialism, uncountable Initialism of glass ionomer cement
2. UK, abbreviation, countable, initialism, uncountable Initialism of gender identity clinic
3. abbreviation, countable, initialism, uncountable Initialism of geomagnetically induced current These geomagnetically induced currents (GICs) can become a hazard when they flow through conducting infrastructure, usually entering and exiting networks where equipment is grounded to Earth.