After dinner, my grandfather launched into a long pi-jaw about manners that made everyone cringe.

The research team observed the decay patterns of pi mesons in the particle accelerator experiment.

During the review session, the professor underlined the three pi pluses on the worksheet to highlight the adjusted constants.

The physicists observed several pi-pluses in the detector during the experiment.

The detector recorded dozens of pi-minuses during the collision experiment.

The detector recorded several pi minuses during the particle collision experiment.

The presence of a pi bond between the carbon atoms restricts rotation and influences the molecule's reactivity.

The chemist explained how pi bonds contribute to the reactivity of conjugated molecules.

Every year, our math club bakes pies and hosts a lecture to celebrate Pi Day.

For dessert, the cafe sold several delicious banoffee pies that disappeared within minutes.