The letter ⟨/⟩, one of two which represent the r sound in Pitman shorthand.
A beam of light or radiation.
A rib-like reinforcement of bone or cartilage in a fish's fin.
A line extending indefinitely in one direction from a point.
A marine fish with a flat body, large wing-like fins, and a whip-like tail.
One of the spheromeres of a radiate, especially one of the arms of a starfish or an ophiuran.
A tiny amount.
A radiating part of a flower or plant; the marginal florets of a compound flower, such as an aster or a sunflower; one of the pedicels of an umbel or other circular flower cluster; radius.
To expose to radiation.
To radiate as if in rays.
To emit something as if in rays.
a syllable used in solfège to represent the second note of a major scale.
About, regarding, with reference to; especially in letters, documents and emails.