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Rotal
- Relating to wheels or to rotary motion; rotary.
Rotalite
- Any fossil foraminifer of the genus Rotalia, abundant in the chalk formation. See Illust. under Rhizopod.
Rotative
- turning, as a wheel; rotary; rotational.
Rotator
- that which gives a rotary or rolling motion, as a muscle which partially rotates or turns some part on its axis.
- Rotator cuff, a muscle in the shoulder
Rotche
- A very small arctic sea bird (Mergulus alle, or Alle alle) common on both coasts of the Atlantic in winter; -- called also little auk, dovekie, rotch, rotchie, and sea dove.
Rotchet
- The European red gurnard (Trigla pini).
Rotella
- Any one of numerous species of small, polished, brightcolored gastropods of the genus Rotella, native of tropical seas.