1. Overlapping in duration
   "concurrently with the conference an exhibition of things associated with Rutherford was held"
   - at the same time

See also: concurrent

• projective geometry
• projective technique
• projective test
• projector
• prokaryote
• prokaryotic
• Prokayotae
• Prokhorov
• Prokofiev
• prolactin
• prolamine
• prolapse
• prolapsus
• prolate
• prolate cycloid
• prole
• proleg
• prolegomenon
• prolepsis
• proletarian
• proletariat
• proletariate
• proliferate
• proliferation
• proliferous