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bandwidth

n.
US //ˈbændwɪdθ// UK //bˈændwɪdθ// band·width
  1. 1 internet speed (n.)
    B2 Upper Intermediate Computing

    the amount of information that can be sent over a connection in a certain amount of time.

    the transmission capacity of a computer network or communication channel, typically measured in bits per second.

    Example

    Streaming high-quality video requires a lot of bandwidth, so the movie kept pausing.

    Example

    The office upgraded its fibre-optic connection to ensure sufficient bandwidth for the entire team to participate in video conferences simultaneously.

    Usage

    Often used as an uncountable noun when referring to general capacity.
    • bitrate
    • connection speed
  2. 2 mental energy or time (n.)
    C1 Advanced Informal

    the mental energy, time, or ability you have to deal with a situation.

    the cognitive or emotional capacity required to handle a task or process information.

    Example

    I would love to help you with the project, but I just don't have the bandwidth right now.

    Example

    The manager realised that the team lacked the emotional bandwidth to take on another high-stress client before the current quarter ended.

    Teacher's tip

    This is a very common corporate metaphor; learners should use it to describe being too busy or overwhelmed to think about something new.
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  1. 3 radio frequencies (n.)
    C2 Proficiency Technical Science

    the range of frequencies used for a radio or electrical signal.

    the difference between the upper and lower frequencies in a continuous band of frequencies, typically measured in hertz.

    Example

    The radio station was granted a specific bandwidth to prevent interference with other channels.

    Example

    The technical specifications require a minimum bandwidth of 20 MHz to maintain signal integrity across the wireless link.
    • frequency range
Origin

From band + width.

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