video
n. C / U A1 Beginner Oxford US //ˈvɪdioʊ// UK //vˈɪdɪəʊ// video
n. a recording of moving pictures and sound that you can watch on a screen.
n. a recording of moving visual images, often accompanied by sound, stored in digital or electronic format.
I watched a funny video on my phone this morning.
The teacher showed a short video to help the students understand how the heart works.
Modern smartphones allow users to capture high-definition video and share it instantly with a global audience via social media platforms.
Etymology tree Proto-Indo-European *weyd-der. Proto-Italic *widēō Latin videōbor. English video From the root vide of Latin videō (“to see”) + -o, formed in analogy to audio.
Usage
Countable when referring to a specific recording; uncountable when referring to the medium or technology in general.