(chemistry, of a compound) [α]_D, the angle of rotation of the plane of polarization of a ray of monochromatic light that passes through 10cm of the substance in solution at a concentration of 1 gram per millilitre

(chiefly uncountable) The act of turning around a centre or an axis. / A single complete cycle around a centre or an axis.

(intransitive) To spin, turn, or revolve. / (intransitive) To advance through a sequence; to take turns. / (intransitive, of aircraft) To lift the nose during takeoff, just prior to liftoff.

Having the parts spreading out like a wheel; wheel-shaped.

(historical) A borough that was represented in Parliament although it had very few voters.

(Britain) A schedule that allocates some task, responsibility or (rarely) privilege between a set of people according to a (possibly periodic) calendar.

(music) A kind of zither, played like a guitar, used in the Middle Ages in church music.

(chemistry, physics) the variation in the optical rotation of a substance with the wavelength of light

Having a round, spherical or curved shape; circular; orbicular. / Having a round body shape; portly or plump; podgy. / (of a sound) Full and rich; orotund; sonorous; full-toned.

(architecture) A round building, usually small, often with a dome.