I popped into the Co-op to grab some bread and milk before work.

The police raided the abandoned warehouse after receiving a tip about a grow-op.

The technician adjusted the gain settings on the op-amps before running the audio test.

I dropped a quarter into the coin-op and spent the next hour trying to beat my high score.

The old coin-op arcade cabinet hummed with life as teenagers gathered around to challenge each other.

The engineer used an op-amp to design a low-noise preamplifier for the sensor.

Before dawn, the unit reviewed the plans for the black op one last time.

I heard about a promising job op at the startup down the street, so I'm going to apply.

The post-op nurse reviewed his medication schedule and mobility plan before discharge.

The nurse checked the post-op for signs of infection before discharge.