What's the technical term for additional material at the start and end of a take? When shooting footage, it's good practice to start a little earlier and end a little later than the actual action. That way, you get more freedom during editing. The same holds true for animated sequences or visual effects.

I'm sure there must be a technical term for that additional time at the start and end of a clip. I'd like to say 'this clip requires 5 frames [additional material at the start] and 10 frames [additional material at the end]'.

What's the term I'm missing? Googling didn't help.
I can't cite any authority, but the term I've used and heard most often is handles. It's not just used for live shots, but refers to any trimmable material that allows for transition points to be adjusted, etc. In your example I'd say "this clip requires 10-frame handles".