Glossary

Watch Time

Average viewing duration of a video.

Definition

Watch time is the cumulative viewing duration of a video – both in absolute terms and as a percentage of its length. It is the most critical algorithm factor on TikTok, Reels, and Shorts.

Related terms

Hook

The first 1–3 seconds of a video.

Engagement Rate

Interaction rate on a post.

Organic Reach

Unpaid reach of a post.

All terms (A–Z)