What is community spread and what it means in the Covid-19 context?

Ohio Department of Health Director Amy Acton said at a press conference alongside Gov. Mike DeWine (R) that given that the virus is spreading in the community in Ohio, she estimates at least 1 percent of the population in the state has the virus.

“We know now, just the fact of community spread, says that at least 1 percent, at the very least, 1 percent of our population is carrying this virus in Ohio today,” Acton said. “We have 11.7 million people. So the math is over 100,000.

Source: https://thehill.com/policy/healthcare/487329-ohio-health-official-estimates-100000-people-in-state-have-coronavirus