1. Turning as on an axis; rotary.
2. Going in a circle; following in rotation or succession; as, rotatory assembles. Burke.
3. (Opt.)
Defn: Producing rotation of the plane of polarization; as, the rotatory power of bodies on light. See the Note under polarization. Nichol.
ROTATORY
Ro"ta*to*ry, n. (Zoöl.)
Defn: A rotifer. [R.] Kirby.
ROTCHE
Rotche, n. (Zoöl.)
Defn: 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
Rotch"et, n. (Zoöl.)
Defn: The European red gurnard (Trigla pini).