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ray

Etymology and origin of the English word ray

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Latin raia
English ray

English has two common words spelled ray: the beam of light, from Latin radius, and the fish, from Latin raia.[1][2][3]

Pronunciation

ray1 beam

Confidence
Established
Formation
Borrowing
First attested
c. 1300
Borrowed from
Old French rai via Middle English
Ultimate origin
Latin (radius)

Etymology

The beam is inherited from Middle English rai,[5] borrowed from Old French rai (“ray of the sun, spoke of a wheel”),[5][2][6] from Latin radius (“ray, spoke, staff, rod”),[5][2] perhaps from an earlier form cognate with Welsh gwraidd “root” and possibly related to Latin rādīx “root”.[2][7] The verb is from the noun.[2][8] It is a doublet of radius and related to radiate and radio.[2][1]

Earliest recorded meaning

A beam of light from a luminous body: early 14th century in Etymonline[5] and the OED,[9] about 1380 in Barnhart.[2]

Semantic evolution

It was not common before the 17th century,[5] and of the sun it usually referred to heat, while beam was preferred for light.[5] A ray is usually a smaller amount of light than a beam, and in science a beam is a collection of parallel rays.[5] A beam or glance of the eye is from 1531[9] and figurative influences comparable to light from 1634.[9] “A trace”, as in not a ray of hope, is from 1773.[9] The verb, “to radiate”, is from 1598, in Florio.[2][7] A ray of sunshine, a cheerful person, is from the late 19th century,[1] 1915 in the OED,[9] and the science-fiction ray gun is recorded by 1931.[5]

Timeline

  • early 14th century – a beam of light.[5][9]
  • 1531 – a glance of the eye.[9]
  • 1598 – verb, to radiate.[2][7]
  • 1773 – a trace.[9]
  • 1915 – ray of sunshine.[9]
  • 1931 – ray gun.[5]

Modern meaning

Noun

  1. A thin line or narrow beam of light or other radiant energy.
  2. Light; radiance.
  3. A small amount; a trace: a ray of hope.
  4. In geometry, a straight line extending from a point.
  5. Something shaped like a line spreading from a centre, such as an arm of a starfish or a ray flower.

Verb

  1. To send out as rays; to emit.
  2. To shine in rays.

Word family

  • rayless
  • raygun
  • X-ray

ray2 fish

Confidence
Established
Formation
Borrowing
First attested
1323
Borrowed from
Old French raie via Middle English
Ultimate origin
Latin (raia)

Etymology

The fish is inherited from Middle English raye,[7] borrowed from Old French raie and directly from Latin raia,[5][2] a word of uncertain origin.[2] De Vaan describes it as unknown but with apparent Germanic cognates (Middle Dutch rogghe, Old English reohhe), perhaps from a substrate language.[5] The old etymology, from its resemblance to the rays of a fan, is not accepted.[5]

Earliest recorded meaning

A flat cartilaginous fish related to the sharks: 1323–4 in the OED and Barnhart.[9][2]

Semantic evolution

Names for kinds of ray, such as eagle ray, stingray and whip ray, are from 1611 on.[9] All skates are rays, but not all rays are called skates.[5]

Timeline

  • 1323–4 – the fish.[9][2]
  • 1611 – names for kinds of ray.[9]

Modern meaning

Noun

  1. Any of various cartilaginous fishes with a flattened body, wide fins joined to the head and a narrow tail, such as the skate and stingray.

Word family

  • stingray
  • manta ray
  • radius
  • radiate
  • radio
  • radiant
  • radix
  • beam
  • skate

Usage notes

Several rare or obsolete words share the spelling: ray “array”, an aphetic form of array;[8][9][7] ray, a striped cloth;[8][7] and ray as a variant of re, the second note of the scale.[8]

References

  1. ^ a b c Cresswell, Julia (2021), Oxford Dictionary of Word Origins, 3rd ed., Oxford: Oxford University Press
  2. ^ a b c d e f g h i j k l m Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
  3. ^ Merriam-Webster's Collegiate Dictionary (2003), 11th ed., Springfield, Mass.: Merriam-Webster
  4. ^ Jones, Daniel (2011), Cambridge English Pronouncing Dictionary, 18th ed., ed. Peter Roach, Jane Setter and John Esling, Cambridge: Cambridge University Press
  5. ^ a b c d e f g h i j k l m n Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  6. ^ Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
  7. ^ a b c d e f Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  8. ^ a b c d Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
  9. ^ a b c d e f g h i j k l m n Simpson, J. A.; Weiner, E. S. C., eds. (1989), The Oxford English Dictionary, 2nd ed., Oxford: Clarendon Press

Related etymologies

Cite this entry

“Ray.” Etymologically, 15 Oct. 2026, etymologically.com/en/ray. Accessed 15 Oct. 2026.

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