Rotary may refer to:

Science, engineering and technology

Rotary motion Rotation or rotational/rotary motion is the circular movement of an object around a central line, known as an ''axis of rotation''. A plane figure can rotate in either a clockwise or counterclockwise sense around a perpendicular axis intersec ...

Rotary dial A rotary dial is a component of a telephone or a telephone switchboard that implements a signaling technology in telecommunications known as pulse dialing. It is used when initiating a telephone call to transmit the destination telephone numb ...

, a rotating telephone dial *

Rotary engine (disambiguation) A rotary engine is a type of internal combustion piston engine used in some early aircraft, motorcycles, and cars. Almost the entire engine rotates about a fixed crankshaft. Rotary engine may also refer to: * Pistonless rotary engine, a type of p ...

, multiple types of engines called "rotary" *

Rotary latch A latch or catch (called sneck in Northern England and Scotland) is a type of mechanical fastener that joins two or more objects or surfaces while allowing for their regular separation. A latch typically engages another piece of hardware on the ...

* Rotary milking shed, a type of milking shed used in the

dairy A dairy is a place where milk is stored and where butter, cheese, and other dairy products are made, or a place where those products are sold. It may be a room, a building, or a larger establishment. In the United States, the word may also des ...

industry *

Rotary snowplow A rotary snowplow (American English) or rotary snowplough is a piece of Rail transport, railroad snow removal equipment with a large circular set of blades on its front end that rotate to cut through the snow on the track ahead of it. It was devel ...

, one type of railroad snowplow used especially for deep snow removal *

Rotary system The rotary machine switching system, or most commonly known as the rotary system, was a type of automatic telephone exchange manufactured and used primarily in Europe from the 1910s. The system was developed and tested by AT&T's American engineerin ...

, a type of pre-electronic telephone switch *

Rotary table (drilling rig) A rotary table is a mechanical device on a drilling rig that provides clockwise (as viewed from above) rotational force to the drill string to facilitate the process of drilling a borehole. Rotary speed is the number of times the rotary table mak ...

, a device used to apply directional force to a drill string *

Rotary tiller A cultivator (also known as a rotavator) is a piece of agricultural equipment used for secondary tillage. One sense of the name refers to frames with ''teeth'' (also called ''shanks'') that pierce the soil as they are dragged through it li ...

, a motorised cultivator *

Rotary woofer A rotary woofer is a subwoofer-style loudspeaker which reproduces very-low-frequency content by using a conventional speaker voice coil's motion to change the pitch (angle) of the blades of an impeller rotating at a constant speed. The pitch of the ...

, a type of loudspeaker capable of producing very low frequency sound *

Rotary wing aircraft A rotary-wing aircraft, rotorwing aircraft or rotorcraft is a heavier-than-air aircraft with rotary wings that spin around a vertical mast to generate lift. Part 1 (Definitions and Abbreviations) of Subchapter A of Chapter I of Title 14 of the ...

Organisations and enterprises

Rotary International Rotary International is one of the largest service organizations in the world. The self-declared mission of Rotary, as stated on its website, is to "provide service to others, promote integrity, and advance world understanding, goodwill, and p ...

, or Rotary Club, an international service organization founded in the United States **

Rotary Foundation The Rotary Foundation is a non-profit corporation that supports the efforts of Rotary International to achieve world understanding and peace through international humanitarian, educational, and cultural exchange programs. It is supported solely ...

, non-profit foundation of Rotary International **

Rotary Scholarships Rotary International offers a number of scholarships worldwide for periods of 3 months, 6 months, 1 year and 2 years. Ambassadorial Mission The purpose of the Ambassadorial Scholarship was to further international understanding and friendly rel ...

, scholarships offered by the organization *

Rotary Watches Rotary Watches Ltd was established at La Chaux-de-Fonds, Switzerland by Moise Dreyfuss in 1895 and owned by Hong Kong's Citychamp Watch & Jewellery Group Limited. By the 1920s family members Georges and Sylvain Dreyfuss began exporting Rotary wa ...

, a Swiss watchmaker

Other uses

Rotary (intersection) A roundabout, a rotary and a traffic circle are types of circular intersection (road), intersection or junction in which road traffic is permitted to flow in one direction around a central island, and priority is typically given to traffic ...

or roundabout, a circular roadway intersection * "The Rotary", a song by Andy Partridge from '' Take Away / The Lure of Salvage'' {{disambiguation