PIDGIN

an improvised contact language combining components of at least two languages, frequently devised for reasons of trading. Pidgins are marked by basic rules and...

PILOT TESTING

the assessment of some factor of the research materials or procedure utilized in a pilot study.

PIVOT GRAMMAR

a kind of basic grammar expressed in the formative phases of language cultivation. Pivot grammar is marked by two-word utterances wherein one word is...

PLANCK'S PRINCIPLE

the notion that new scientific theories don't attain approval by a step-by-step procedure of validation which persuades opponents to believe they are true....

PLATYCEPHALY

a condition wherein the crown of the head is irregularly flat.

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