For dessert, she ordered two Boston cream pies to share with the table.

For the summer fair, my grandmother baked a dozen tin roof pies and arranged them on the windowsill to cool.

At the bakery, I bought three shoo-fly pies to share with my neighbors.

At the county fair, my grandmother sold sugar cream pies from a small wooden booth.

My younger sister was recently diagnosed with ADHD-PI, which helps explain her frequent forgetfulness and difficulty sustaining attention.

The detector recorded several pi-plus tracks from the collision, confirming they were composed of an up quark and an anti-down quark.

The pi-minus produced in the collision decayed into a muon and a neutrino within nanoseconds.

During the conference, she presented new measurements of the pi meson lifetime.

When all other plans collapsed, the committee approved the temporary measure as a pis aller.

We measured PI IgG levels in the serum samples before immunization to establish a baseline.