Touch off

Verb

Définitions

1.VerbTo start (something); to set off traps; especially used for unstable situations that may magnify if disturbed.

"Be cautious talking about religion or politics, lest you touch off an argument."

2.VerbTo cause a fire to start.

"A spark touched off the conflagration."

3.VerbTo establish a reference coordinate or datum, by moving the tool head to just touch the workpiece or machine bed.

"A traditional method of touching off uses a piece of thin paper placed between the tool and workpiece."

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