Used as a noun or na-adjective to describe something wide or broad, often in compound words or as a modifier.
This TV supports wide-screen display.
Let's think about things from a broad perspective.
ワイルド (from 'wild') sounds similar to ワイド but means rough or untamed, not wide.
infotainment TV program; TV gossip show; tabloid talk show
long TV show; extended broadcast
wide-band
wide-leg pants
wide-angle lens
Loanword from English 'wide'.