Antonyms for spiral

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Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.

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Here is another spiral similar in every respect to spiral C.

Some cutouts have a spiral spring attached to the cutout armature.

Lingua spiralis: the spiral tongue of Lepidoptera: see glossa.

Spiral: rolled up like a watch spring, or twisted like a cork-screw.

These are covered and surrounded with boards, fastened on to protect the spiral.

Very often in place of writing, all I could get from them would be spiral lines.

There is much controversy as to the nature of these spiral nebul.

In the massive type, the development seems to be a spiral one.

The spiral motion has the effect of minimizing this difficulty.

It would still take four hours to get down, in a spiral of deceleration.

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Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.