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1(of motion) revolving around a centre or axis; rotational.
- ‘The back and forth movement of each piston was translated into rotary motion by a crank shaft.’
- ‘These are potentiometers that operate in a linear direction as opposed to a rotary direction.’
- ‘No mention is made of rotary motion from the elbow or lateral movement from the wrist.’
- 1.1 (of a thing) acting by means of rotation, especially (of a machine) operating through the rotation of some part:‘a rotary mower’
rotating, rotatory, rotational, revolving, turning, spinning, gyrating, gyratory, whirlingView synonyms
- ‘A rotary dial switch instead of the momentary-contact one used would be a cheap way for it to remember the setting you preferred.’
- ‘Sidel builds machinery for aseptic packaging of plastic bottles, with a focus on high-speed rotary machines.’
- ‘The sole clearly shows the regularly spaced, parallel tool marks of a powered rotary planer.’
- ‘After a short while, in fact several times a day, he has to resharpen the chisels on a rotary grinding wheel he's acquired.’
- ‘Thankfully, these rotary engines show no protest whatsoever when you do work them hard.’
- ‘For maximum effectiveness, a rotary hoe should be used when weeds are in the ‘white stage ‘, or just emerging from the soil.’’
- ‘Dozens of cultivation tools are at the organic producer's disposal, he added, from rotary hoes to new machines that simply vibrate soil to uproot newly sprouted weeds.’
- ‘Back in the 1940s, when the area code system was designed, there was no such thing as a touch-tone phone - all telephones operated via rotary dialing pulse operation.’
- ‘The coil is connected to the main tube by a rotary valve and converts the trombone into a bass in F.’
- ‘If it had a USB port, there would be a lot of money to be made by selling a plug-in rotary dial unit to operate the thing properly.’
- ‘A compact utility room houses a shower, hand basin and toilet together with commercial laundry machines and a rotary iron.’
- ‘This is particularly true of rotary combines that operate better at full load.’
- ‘It packs motorized faders, multifunction rotary encoders and a host of keys.’
- ‘After passage through glass fiber filter paper, the filtrate was concentrated using a rotary vacuum evaporator.’
- ‘You may recall that rotary joysticks have handles that rotate to 12 different positions, designed for aiming in certain games.’
- ‘We've gone from having local farmers help out with labeling by hand to running automated labeling machines and high-speed rotary mold machines.’
- ‘Publishing used to be a very mechanical industry: trays of metal type, huge Linotype type-casting machines weighing a tonne or so each, gigantic rotary printing machines, and so on.’
- ‘Ground speed with a rotary hoe should usually be between 8 and 12 mph, and the hoe tips should penetrate deep enough to go through any crust that has formed.’
- ‘There were mechanical, rotary dial types and these were pretty good as you could set almost any time very quickly.’
- ‘Ellison's most recent expansion provided the company with some additional equipment including a computer controlled wire-cut machine and a rotary molder.’
1A rotary machine, engine, or device:‘there is an output level rotary for overall volume setting’
- ‘On the downside, mulching mowers work less well on wet or overly tall grass compared with nonmulching rotaries, and the cutting blade must be sharp.’
- ‘His RX-7 made it a solid top four filled with rotaries.’
- ‘By learning from the faults of previous large out-front turf rotaries and increasing engine horsepower, this unit has performed very well for many courses.’
- ‘Past rotaries demonstrated questionable reliability, high fuel consumption and difficulty meeting emissions standards.’
- ‘My favourites are still the RX7 rotaries, which give magnificent flameouts and backfires from the exhaust when the drivers lift their foot off the accelerator.’
- ‘An agricultural chemical dealer in the Hingurakgoda area had about 600 small tractors and tractor rotaries, all of which had been pawned.’
- ‘The problem is that rotaries have a dipsomaniacal thirst for petrol and oil and produce most of their power at high revs.’
- ‘They were bringing in legislation to ban any cars delivering more than 95 dBA and the early race trim rotaries were producing 112 dBA.’
- ‘True, it doesn't get as close as the rotaries, but it gets more hair without making my neck as irritated.’
- ‘Let us look a little at what the auto manufacturer has done, other than winning Le Mans with its rotaries about 12 years ago.’
- ‘My experiences with Mazda rotaries has left me an ardent enthusiast of the engine for life.’
- ‘She looked rather lost unused to choosing between an electric hover or a self-propelling rotary.’
2North American A traffic roundabout.
- ‘As usual, the Fresh Pond rotaries were at a standstill.’
- ‘On rotaries, the only road signs you see are the ones you've just missed.’
Mid 18th century: from medieval Latin rotarius, from rota wheel.
A worldwide charitable society of business and professional people, formed in 1905.
So named because members hosted events in rotation.
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