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Low altostratus clouds often produce
rain. 2. to make or to manufacture

Most light aircraft are produced in the
United States. 3. to show
The pilot
must produce her licence to the authorities
within two weeks.
product product /prɒdkt/ noun 1. something
created or made by human or natural
methods
Carbon monoxide is a
product of the combustion process. 2. a
number obtained by multiplying two
other numbers together
The amount of
power produced in a purely resistive
production 180
circuit is a product of voltage and current
(P = VI watts).
production production /prə|dkʃən/ noun 1.
creation
The movement of air over the
aerofoil is necessary for the production
of lift. 2. the process of manufacturing
something
Production of aircraft in
the factory came to a stop in 1974. 3.
the act of showing
An authorised person
may require the production of a certificate
of airworthiness.
profile profile /prəυfal/ noun 1. an outline
or shape of something, seen from a side
view
The de-icing panels are formed
to the profiles of the wing and tail unit
leading edges into which they are fitted.
2. a short description
The handbook
gives a short profile of the different aircraft
types.
prognostic prognostic /prɒ$|nɒstk/ adjective
referring to foretelling or foreseeing
events such as the weather
prognostic chart prognostic chart /prɒ$|nɒstk
tʃɑt/ noun a chart which predicts the
weather for a given area
Prognostic or
forecast charts are prepared, by the
central meteorological office of each
region, normally for periods up to 24
hours ahead. Also called forecast
chart
programme programme /prɒd"ekt/ noun the
schedule of events to take place or procedures
to be followed
Every part of
the aircraft must be designed to carry
the load imposed on it and in order to
determine such loads a programme of
stress analysis is always carried out.
(NOTE: The word is also written program
in US English.)
progress progress /prəυ$res/ noun movement
towards an end or aim
the
progress of an aircraft in flight  in
progress taking place  embarkation
is in progress passengers are boarding
the aircraft
progression progression /prəυ|$reʃ(ə)n/ noun a
continuous series or sequence
The
instruments are checked in logical progression
from left to right.
progressive progressive /prə|$resv/ adjective
gradual, in stages
Throttle movements
should be kept to a minimum and be
smooth and progressive.
prohibit prohibit /prəυ|hbt/ verb to disallow
or forbid
Smoking is prohibited in toilets.
project project noun /prɒd"ekt/ a largescale
plan or scheme
a project to modernise
the airport  verb /prə|d"ekt/ 1.
to protrude or jut out
Ice is allowed to
accumulate on a probe which projects
into the airstream. 2. to produce an
image on a screen with a film or slide
projector
The instructor projected a
diagram of the fuel system onto the
screen.
projection projection /prə|d"ekʃən/ noun the
production of an image on a surface
prolong prolong /prə|lɒŋ/ verb to increase the
duration or time, often unnecessarily

to prolong the life of an engine
Prolonged
idling at low rpm (revolutions
per minute) could cause spark plug
fouling.
promulgate promulgate /prɒməl$et/ verb to
make known through official means

The range promulgated for NDBs (nondirectional
radio beacons) in the
United Kingdom is based on a daytime
protection ratio between wanted and
unwanted signals.
prone prone /prəυn/ noun  prone to likely
to do something, or more than usually
affected by something
Wing leading
edges and engine intakes and propellers
are prone to icing.
pronounced pronounced /prə|naυnst/ adjective
noticeable or marked
Turbulence
caused by convection is more pronounced
over paved surfaces than over
forest or grassy terrain.
propagation propagation /prɒpə|$eʃ(ə)n/ noun
transmission
The speed of propagation
of radio waves is slower over land
than sea.
propel propel /prə|pel/ verb to cause to move

Fronts are propelled by the wind
behind them.
propeller propeller /prə|pelə/ noun a rotating
　
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