Glossary P

PID is the abbreviations of Pelvic inflammatory disease that refers to an infection and inflammation of the abdominal region that may have various causes and that may impair fertility.

PID also refers to an infection and inflammation of the pelvic organs, such as the fallopian tubes and the uterus, in the female.

Pidgin is defined as a structurally simple language that arises when people who share no common language come into contact; an auxiliary language that is created when speakers of mutually unintelligible languages are in close contact. Moreover, Pidgins refer to structurally simple communication systems that arise when people who share no common language come into constant contact.
Pied piper refers to a person who offers others strong yet delusive enticements. Likewise, it refers to a person, such as a leader, who makes irresponsible promises. The word is after the character of Robert Browning's poem, The Pied Piper of Hamelin
- Pierre Flourens (1794-1867) : Pierre Flourens concluded that the cortical region of the brain acts as a whole and is not divided into a number of faculties, as the Phrenologists had maintained.
- Pierre Gassendi (1592-1655) : Pierre Gassendi a scientist who saw humans as nothing but complex, physical machines, and he saw no need to assume a non-physical mind. Gassendi had much in common with Hobbes.

- Pierre Janet (1859 to 1947) : Pierre Janet theorized that components of the personality, such as traumatic memories, could become dissociated from the rest of the personality and that these dissociated components are responsible for the symptoms of Hysteria and for Hypnotic phenomena, like Charcot.
Pilot experiment is defined as a small-scale experiment that might not satisfy all the requirements of experimentation it is conducted for the purpose of pre-testing the levels and procedures to be used in the final experiment.
Pimp refers to a procurer or manager of prostitutes who provides access to prostitutes and protects and exploits them, living off their proceeds. Pimp is a slang term that refers to the male in charge of organizing clients for a female prostitute ; a prostitute's companion, protector, and master.