different between roration vs rotation

English

Etymology

From the Latin r?r?tio.

Pronunciation

• (Received Pronunciation) enPR: rôr??sh?n, IPA^(key): /?????e???n/

Noun

roration (plural rorations)

1. A falling of dew.

   With dawn we see the mark of yesternight’s roration.

   • 1810: James Kennedy, Glenochel: A Descriptive Poem in Two Volumes, volume 1, page 50

     That in the bland rorations calm
     ?Their luscious redolence receive,
     And, with a still, ambrosial balm,
     ?Aromatize the breath of eve.

Related terms

• rore (obsolete)

References

• The Universal Etymological English Dictionary (1727), volume II of An Universal Etymological English Dictionary (1721), by Nathaniel Bailey
  ??A Falling of Dew.
• “ro?ration²” listed in the Oxford English Dictionary [2nd Ed.; 1989]

English

Etymology

Borrowed from Latin rotationem, accusative of rotatio.Morphologically rotate +? -ion

Pronunciation

• (General American) IPA^(key): /?o??te???n/
• Rhymes: -e???n

Noun

rotation (countable and uncountable, plural rotations)

1. (chiefly uncountable) The act of turning around a centre or an axis.

   The earth's rotation about its axis is responsible for its being slightly oblate rather than a sphere.

2. A single complete cycle around a centre or an axis.

   Earth's moon completes a rotation every twenty-seven days or so.

3. A regular variation in a sequence, such as to even-out wear, or people taking turns in a task; a duty roster.

   Applying crop rotation to a field avoids depleting soil nutrients the way repeated use of a single crop might do.

   In rotation, each member of the group would be responsible for the beacon fire.

   The medical resident finished a two-week rotation in pediatrics and began one in orthopaedics.

4. (mathematics, geometry) An operation on a metric space that is a continuous isometry and fixes at least one point.

   The function mapping (x,y) to (?y,x) is a rotation.

5. (baseball) The set of starting pitchers of a team.
6. (aviation) The step during takeoff when the pilot commands the vehicle to lift the nose wheel off the ground during the takeoff roll. (see also: V2)
7. Repeated play on a radio station, etc.

   The new single enjoyed heavy rotation on MTV.

Synonyms

• turning
• revolution
• rota, roster, duty roster, schedule, turn, turn and turn about, cycling

Hypernyms

• (mathematics): isometry, transformation

Derived terms

• crop rotation
• improper rotation

Related terms

• rotary
• rotate
• rotational

Translations

See also

• axis

Further reading

• Rotation on Wikipedia.Wikipedia

French

Etymology

Borrowed from Latin rotationem, accusative of rotatio.

Pronunciation

• IPA^(key): /??.ta.sj??/

Noun

rotation f (plural rotations)

1. rotation

Derived terms

• axe de rotation

Related terms

• rouer, rôder

Further reading

• “rotation” in Trésor de la langue française informatisé (The Digitized Treasury of the French Language).

Swedish

Etymology

Borrowed from Latin rotatio.

Noun

rotation c

1. act of turning a physical object or a coordinate system around a center or an axis

Declension