ETYM Latin demolitio, from demoliri: cf. French démolition. Related to Demolish.
The act of demolishing.

1. Someone who quits school before graduation.
2. Someone who withdraws from a social group or environment. drop out, drop-out
3. A dropout is someone who has left school, usually high school or college, before graduating.

The act of severing; SYN. severing.

ETYM Latin truncatio.
1. The act of truncating, lopping, or cutting off.
2. The state of being truncated.
3. The replacement of an edge or solid angle by a plane, especially when the plane is equally inclined to the adjoining faces.

1. The act of stopping something; SYN. stoppage.
2. The event of something ending; SYN. halt.
3. A spot where something halts or pauses
4. A brief stay in the course of a journey; SYN. stopover, layover.

ETYM Latin truncatio.
1. The act of truncating, lopping, or cutting off.
2. The state of being truncated.
3. The replacement of an edge or solid angle by a plane, especially when the plane is equally inclined to the adjoining faces.