• (obsolete) Array; order; arrangement; dress.
  • (zoology) A rib-like reinforcement of bone or cartilage in a fish's fin.
  • (obsolete) Sight; perception; vision; from an old theory of vision, that sight was something which proceeded from the eye to the object seen.
  • The name of the letter ⟨/⟩, one of two which represent the r sound in Pitman shorthand.
  • A beam of light or radiation.

    "I saw a ray of light through the clouds."

  • (botany) 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.
  • (colloquial) A tiny amount.

    "Unfortunately he didn't have a ray of hope."

  • A marine fish with a flat body, large wing-like fins, and a whip-like tail.
  • (music) Alternative form of re
  • (zoology) One of the spheromeres of a radiate, especially one of the arms of a starfish or an ophiuran.
  • (mathematics) A line extending indefinitely in one direction from a point.


  • (now rare) To dress, array (someone). [from 14th c.]
  • (transitive) To emit something as if in rays.
  • (obsolete) To arrange. [14th-18th c.]
  • (obsolete) To stain or soil; to defile. [16th-19th c.]
  • (intransitive) To radiate as if in rays

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