A module is an individual part that combines with other components to make different things. You might have one module that's a cube, and another that's a slab of wood. Two cubes and a slab could make an end table.

In space exploration, module can refer specifically to one of the lunar modules used for landing on the moon during the Apollo space missions. Two astronauts used a module to descend to the moon from the orbiting Apollo spacecraft and to return when the moon mission was complete. More recently, the Space Shuttle delivered several modules to the International Space Station, which is built on a modular design.

Definitions of module
  1. noun
    one of the inherent cognitive or perceptual powers of the mind
    synonyms: faculty, mental faculty
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    the faculty or power of mental concentration
    language, speech
    the mental faculty or power of vocal communication
    memory, retention, retentiveness, retentivity
    the power of retaining and recalling past experience
    intellect, reason, understanding
    the capacity for rational thought or inference or discrimination
    sensation, sense, sensory faculty, sentience, sentiency
    the faculty through which the external world is apprehended
    volition, will
    the capability of conscious choice and decision and intention
    modality, sense modality, sensory system
    a particular sense
    volition in its weakest form
    sensibility, sensitiveness, sensitivity
    (physiology) responsiveness to external stimuli; the faculty of sensation
    absorption, concentration, engrossment, immersion
    complete attention; intense mental effort
    mental note
    special attention with intent to remember
    alertness, vigilance, wakefulness, watchfulness
    the process of paying close and continuous attention
    anamnesis, recollection, remembrance
    the ability to recall past occurrences
    type of:
    ability, power
    possession of the qualities (especially mental qualities) required to do something or get something done
  2. noun
    a self-contained component (unit or item) that is used in combination with other components
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    a module designed to be inserted into a larger piece of equipment
    power module
    module that provides power to operate other modules
    ink cartridge
    a cartridge that contains ink and can be replaced
    tape cartridge
    a cartridge containing magnetic tape; for use with audio or video recorders or computer systems
    type of:
    component, constituent, element
    an artifact that is one of the individual parts of which a composite entity is made up; especially a part that can be separated from or attached to a system
  3. noun
    detachable compartment of a spacecraft
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    command module
    a space module in which astronauts can live and control the spacecraft and communicate with earth
    type of:
    a partitioned section, chamber, or separate room within a larger enclosed area
  4. noun
    computer circuit consisting of an assembly of electronic components (as of computer hardware)
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    type of:
    computer circuit
    a circuit that is part of a computer
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