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foreseeable Only the high frequency
band has predictable, reliable sky wave
propagation by day and by night. 2.
capable of being foreseen, expected or
anticipated the accident was predictable
it was possible to know that the
accident would happen before it happened
prediction prediction /pr|dkʃən/ noun the act
of saying what will happen in the future
The map display combines current
ground speed and lateral acceleration
into a prediction of the path over the
ground to be followed over the next 30,
60 and 90 seconds.
predominance predominance /pr|dɒmnəns/
noun greatest importance or influence
The predominance of a cold northerly
airstream during the winter months.
predominant predominant /pr|dɒmnənt/ adjective
most important or influential, more
powerful than others The ocean surface
usually consists of a predominant
177 present
swell three or four feet high and 500 to
1,000 feet between crests.
predominate predominate /pr|dɒmnet/ verb to
have greater number or importance, or
to be more powerful than others A
cold northerly airstream predominates
during the winter months.
prefer prefer /pr|f%/ verb to like more, to
favour Of the two basic types of fuel
pump, where lower pressures are
required at the burners, the gear-type
pump is preferred because of its lightness.
(NOTE: preferring – preferred)
preferable preferable /pref(ə)rəb(ə)l/ adjective
better than, more desirable Three
position lines are preferable to two. If
there is a choice between two courses of
action, the safest is the most preferable.
preference preference /pref(ə)rəns/ noun in
preference to by choice, rather than
For some applications, e.g. landing
gear and flaps, hydraulic systems are
used in preference to mechanical or
electrical systems.
prefix prefix /prifks/ noun part of a word
added at the beginning of a word to alter
the meaning Pre- is a prefix meaning
‘before’. (NOTE: The plural form is prefixes.)
COMMENT: The prefixes for cloud
types are: alto- medium level cloud
(6,500 feet to 23,000 feet); cirro- high
cloud (16,500 feet and above); nimboany
height, but rain-bearing as for
example nimbostratus: rain carrying,
low-level cloud; strato- low cloud (up
to 6,500 feet).
pre-flight pre-flight / pri flat/ adjective taking
place before a flight pre-flight
briefing a short instructional talk
before a flight pre-flight checks
checks made on the aircraft structure
and systems before taking off During
pre-flight checks, control surfaces
should be moved by hand to ascertain
that they have full and free movement.
noun the set of procedures and checks
that pilots and ground crew must carry
out before an aircraft takes off verb to
inspect an aircraft before it takes off to
ensure that it is airworthy
pre-ignition pre-ignition /pri$|nʃ(ə)n/ noun
the ignition of the fuel/air mixture in the
combustion chamber, occurring before
the spark Pre-ignition is often caused
by a hot spot in the combustion chamber
which ignites the mixture.
preparation preparation / prepə|reʃ(ə)n/ noun
a state of readiness or act of making
something ready for use beforehand
Normal aircraft preparation are actions
and precautions taken by the cabin crew
on every flight to ready the aircraft for
any abnormal or emergency situation
which may occur during any phase of
the flight.
prepare prepare /pr|peə/ verb 1. to make
ready beforehand for a particular purpose,
as for an event or occasion The
instructor prepared the students for the
exams. prepare for take-off to get
ready for take-off 2. to make by putting
various elements or ingredients
together Regional area forecasting
centres use information about upper
wind speeds and temperatures to prepare
specific forecasts and significant
weather charts.
prescribe prescribe /pr|skrab/ verb to set
down as a rule or a guide prescribed
procedures a set or fixed pattern of
doing something A means of holding
the fine pitch stop in a prescribed position
is also called ‘pitch lock’.
pre-select pre-select /pris|lekt/ verb to select
or to choose in advance
pre-selected pre-selected /pris|lektd/ adjective
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Dictionary of Aviation下(41)
