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a. a line of coaches or wagons coupled together and drawn by a railway locomotive
b. (as modifier): a train ferry
2. a series of interacting parts through which motion is transmitted


1. The faint glow sometimes left by a brighter meteor along its path. It is much less conspicuous than the visible radiation that comes from the immediate vicinity of the ablating meteoroid. It is known as a wake if it glows for less than a second and a persistent train if the duration is longer. Sudden and brief enhancements of light during the meteor's passage are termed flares (or bursts).
2. The ionization and dust left along the meteoroid path.



railroad cars arranged in an order and linked together with one or more locomotives or motorized railcars equipped with lights and other identification signals.

In the USSR the order, movement, arrival and departure, and maintenance of trains are carried on according to the current rules for the technical operation of railroads. On the railroads of the Ministry of Railroads of the USSR the trains are classified by what is called train superiority. The first category is special trains, including emergency, fire-fighting, and snow-removal trains. Second are regular trains, such as passenger trains with long-distance, local, and surburban service. Third-class trains include mail-baggage, freight-passenger, freight, and maintenance trains. There are also locomotives with no cars, individual motorized railcars and motorized railcar sections, rail diesel cars, and motorized trolleys of the nonremovable type that are dispatched on spans between stations.

Trains are operated by locomotive crews of no less than two persons. Passenger trains have, in addition, conductors for the cars and, in some cases, other workers. The movement of a train within each section (averaging in length about 130–140 km) is directed by only one official— the train dispatcher on duty, who is responsible for keeping the trains on schedule and for assuring traffic safety.

Trains are marshaled for the most part at major stations intended for the purpose in compliance with a traffic chart and a marshaling plan for the train. In every category a limit has been established for the weight and length of the train in accord with the tractive power of the locomotive used and the length of the arrival-departure tracks. The weight of a passenger train in the USSR may reach 1,000–1,200 metric tons. Freight trains range from 6,000 to 10,000 metric tons.

The maximum permissible speed in the USSR for passenger trains is 160 km/hour (in some sections 200 km/hr or more); for express freight trains, 100-120 km/hr; and for ordinary freight trains, 80-100 km/hr.

A number is assigned to each train. Trains going in one direction have an even number, and those going in the opposite direction have an odd number.


What does it mean when you dream about a train?

The train as a dream symbol is often linked with the Freudian interpretation of the train (phallus) going through the tunnel (vagina), representing intercourse. Yet even Freud gave trains alternative meanings (e.g., missing a train might represent missed opportunities or even missing one’s death (rather than missing intercourse). Being the engineer on a train and traveling smoothly down the track may mean staying “on track” in one’s life. As with all such symbols, the dreamer’s prior associations with trains determines their meaning in a particular dream.


The bright tail of a comet or meteor.
To aim or direct a radar antenna in azimuth.


This dream symbol can be very complicated and its meaning is specific to the dreamer (as all dream symbols are). If you normally take the train to work and it is a part of your daily experience, closer attention should be paid to the other details of the dream. Going on a train ride may be symbolic of your life’s journey. If you are the engineer, you may be reassuring yourself in the dream state that you are in control of a specific situation or life in general. The train could also be symbolic of your need to move on and to do things in an orderly and sequential manner. Freud said that the train is usually a phallic symbol and that a train going through a tunnel represents intercourse. Freud also said that there are other possibilities to this symbol. For example, if you missed the train in your dream, you may be fearful of missing important opportunities. Jung thought that the train ride represented the way a person moves and behaves just like everyone else and that you the dreamer may be striving for wholeness.
References in periodicals archive ?
More generally, a completed general education, at least at primary level, is an essential preparation for labour market integration, and to ensure trainability and career development later in life.
People with such a qualification provide a clear signal for the labor market; their field of study is highly indicative of their productivity and trainability.
5-12) However, trainability of exercise, that is whether exercise at the AT point improves physical endurance or not, has been illusive in children with CP.
Some manufacturers of ship decoy launchers, such as Buck, Wallop, and Rafael place great emphasis on the trainability of the launcher itself in order to achieve optimal deployment patterns.
These measures were: (a) perceived effect on working relationship of the workgroup, (b) hiring decision, (c) promotability, (d) tardiness/absenteeism problem, (e) willingness to work with, (f) willingness to work for, (g) trainability, (h) work motivation, and (i) predicted productivity.
Paul Pereira of Netserv said his reasons for doing business in Jamaica included the island's proximity and similar time zone to North America, the trainability of Jamaican workers, the common English language, and availability of suitable office space.
Unlike aptitude tests, which evaluate an individual's trainability, knowledge and skill tests measure how much he or she has already learned in a particular field.
Dorothee Luking, who has trained her competition dogs for eight years, said: "German Shepherds have great temperament and they have a very high degree of trainability.
That is, to correlate the parameters of the personnel policy with variables describing the employer's environment, such as the technology set available, local labor market conditions, demand volatility, and the trainability of the work force.
As more people moved to Paris and provincial cities, the Pudel's French cousin, a duck hunting dog, or caniche, was selected for compactness and trainability.
The ASVAB was developed to assess the trainability of potential recruits and ASVAB data are used to compute Armed Forces Qualification Test (AFQT) scores.
There are numerous potential applications of cognitive mapping in relation to occupational/organizational psychology and five are highlighted here: training evaluation; transfer of learning; trainability testing; implicit personality theories; and organizational culture.