What does PESA stand for?

Parent Expectations Support Achievement (AD)

Particle Elastic Scattering Analysis (ODA)

Pectoral Sandpiper - Common English name - Scientific name: Calidris Melanotos - American Ornithologists Union four-character bird identification (IBP)

Pennsylvania Elks State Association (EARSL)

Percutaneous Epididymal Sperm Aspiration - Medicine (MELL)

Petroleum Electric Supply Association - Defunct (EA)

Petroleum Equipment Suppliers Association (EA)

Propellant Expulsion and Storage Assembly

Proton Elastic-Scattering Analysis