Search words & phrases
    Footer
    Download on the App StoreGet it on Google Play

    About

    • About Us
    • Our Learning Services
    • Join Us
    • FAQ
    • Hot Tags

    Services

    • Pronunciation Challenge
    • Saved
    • Search Vocabulary
    • Blog

    Channels

    Levels

    • A1
    • A2
    • B1
    • B2
    • C1
    • C2

    Privacy˙Terms˙
    ©2026 VoiceTube Corporation. All rights reserved

    define

    US /dɪˈfaɪn/

    ・

    UK /dɪ'faɪn/

    A2TOEIC
    v.t.Transitive VerbTo explain the meaning of words
    You must define each word clearly
    v.t.Transitive VerbTo set or mark the limits of something
    We should define the boundary between my land and yours
    v.t.Transitive VerbTo describe something clearly and exactly.
    The contract defines the responsibilities of each party.
    v.t.Transitive VerbTo mark out or clearly show the outline or boundary of.
    The boundaries of the park are clearly defined.

    Video subtitles

    How solar energy got so cheap

    06:31How solar energy got so cheap
    • They just became cheap so quickly; it's really an amazing breakthrough that is going to come to define the 21st century.

      They just became cheap so quickly; it's really an amazing breakthrough that is going to come to define the 21st century.

    • It's really an amazing breakthrough that is going to come to define the 21st century.

      It's really an amazing breakthrough that is going to come to define the 21st century.

    B1

    Gen Z is reshaping the future of work – here’s how

    08:36Gen Z is reshaping the future of work – here’s how
    • and it is up to us to really try to define it better for them.

      and it is up to us to really try to define it better for them.

    • And it is up to us to really try to define it better for them.

      And it is up to us to really try to define it better for them.

    B1

    How to tell if you're being bullied at work | BBC Ideas

    06:15How to tell if you're being bullied at work | BBC Ideas
    • How would you define bullying?

      How would you define bullying?

    • It is quite subjective and it can be hard to define, or even to recognise when it's happening.

      It is quite subjective and it can be hard to define, or even to recognise when it's happening.

    B1

    It doesn’t matter if you fail. It matters *how* you fail. | Amy Edmondson for Big Think +

    07:10It doesn’t matter if you fail. It matters *how* you fail. | Amy Edmondson for Big Think +
    • I define complex failure as a failure with multiple causes.

      I define complex failure as a failure with multiple causes.

    B1

    Mesopotamia: Crash Course World History #3

    12:06Mesopotamia: Crash Course World History #3
    • Let's define empire as the extension by conquest of control over people who do not

      Let's define empire as the extension by conquest of control over people who do not

    B2

    Watch Jim Lehrer Moderate First Full Presidential Debate

    31:01Watch Jim Lehrer Moderate First Full Presidential Debate
    • doesn't like to think of himself as small anything, but -- but that's how you define

      doesn't like to think of himself as small anything, but -- but that's how you define

    • ever go on and define what a qualified mortgage was.

      ever go on and define what a qualified mortgage was.

    B1

    Why You Need to Have a Proper Adolescence

    03:31Why You Need to Have a Proper Adolescence
    • as we realise our right to define ourselves away  from parental laws. We can even do it in secret.  

      as we realise our right to define ourselves away  from parental laws. We can even do it in secret.  

    B2

    How to fight climate change with parking lots

    08:32How to fight climate change with parking lots
    • My job on Top Gun: Maverick was to define the soundscape

      My job on Top Gun: Maverick was to define the soundscape

    B1

    What Is Time? (better audio) Determinism, Quantum Physics, Consciousness, Free Will, Causality...

    31:18What Is Time? (better audio) Determinism, Quantum Physics, Consciousness, Free Will, Causality...
    • our scientific method, how we define science and what its limitations are.

      our scientific method, how we define science and what its limitations are.

    B1

    Knorr #LoveAtFirstTaste

    03:00Knorr #LoveAtFirstTaste
    • How would you define love?

      How would you define love?

    B1