Capable of being turned down;

Made to wear with the upper part turned down; as, a turndown collar.

Where a rider turns the handlebars and his body down towards the ground while the rest of the bike stays facing straight up.

see rangeability.

Turndown conveys the same information as rangeability but in a slightly different way. Turndown is the ratio of maximum flow to minimum flow. For example, a 100LPM flow meter, with a 100:1 (100 to 1) turndown, the maximum flow rate would be 100LPM and the minimum flow rate where you could reasonably use the unit would be 1LPM. All Alicat flow meters and controllers will read all the way down to zero flow. None Found

An act of refusing or of being refused; as, to get a turndown in an application for a job, a grant, etc.

the act of refusing an offer; "the turndown was polite but very firm"

Reduced operating conditions compared to design conditions. This usually refers to reduced heat duty, which may be the result of reduced throughout and/or reduced enthalpy requirements.

Designating, or pertaining to, an incandescent lamp with a small additional filament which can be made incandescent when only a small amount of light is required.

a decline in activity, especially business; as, they expect a turndown in housing construction in the fall.