Go to New Version of This Page
This old version has not been updated since 2016,
but we're leaving it in case you prefer it.
Show What's New
Please update your links from the new version.
We rode an
loop roller coaster.
to turn something in the opposite position — such as upside down, inside out, or (of two things) in switched position
can also be used in specialized senses in music, logic, mathematics, chemistry and other areas. See the related Wikipedia article for discussions in different specialties.
. . . enhancing vocabulary while reading