English to English Dictionary

Pygarg

An antelope with a white rump, often identified with the addax or a similar desert-dwelling hoofed mammal.

Pyrolyze

To subject an organic material to pyrolysis; to undergo chemical decomposition caused by extreme heat in the absence of oxygen.

Python

A large, heavy-bodied constricting snake found in tropical and subtropical regions of the Old World.

pH

A figure expressing the acidity or alkalinity of a solution on a logarithmic scale on which 7 is neutral, lower values are more acidic, and higher values more alkaline.

pachuco

A member of a subculture of Mexican-American teenagers and young men associated with zoot suits, distinct slang (Caló), and a rebellious lifestyle in the mid-20th century.

packing list pouch

A weather-resistant plastic envelope attached to the outside of a shipping container or package to hold invoices and manifest documents.

paleomagnetism

The branch of geophysics concerned with the magnetism in rocks that was induced by the earth's magnetic field at the time of their formation.

paleontology

The branch of science concerned with fossil animals and plants.

paparazzi

Photographers who follow famous people everywhere in order to take photographs of them for newspapers and magazines.

paperclip

A small piece of bent wire or plastic used for holding several sheets of paper together.

parabolic reflector

A reflective surface used to collect or project energy such as light, sound, or radio waves in a particular shape based on a parabola.

parameter

A numerical or other measurable factor forming one of a set that defines a system or sets the conditions of its operation.