doubling

1. The process or an instance of making something double; a multiplication by two. [from 14th c.]Examples: "In an article concerning Yunnan, it pointed out that the efforts of the Nuchiang Lisu Autonomous Chou’s party committee had resulted in a doubling of minorities cadres since 1965, and that many of these persons had assumed the first and second positions in leadership squads at different levels."; "Similitude applies to proportional changes, such as doublings, halvings, or quarterings; it does not apply to additive changes."countableuncountable

2. The act of turning around, or doubling back. [from 16th c.]countableuncountable

3. A pleat or fold. [from 17th c.]countableuncountable

4. (archaic) A trick; double-dealing.archaiccountableuncountable