heat ray - a ray that produces a thermal effect

high beam - the beam of a car's headlights that provides distant illumination

light, visible light, visible radiation - (physics) electromagnetic radiation that can produce a visual sensation; "the light was filtered through a soft glass window"

moon ray, moon-ray, moonbeam - a ray of moonlight

sunbeam, sunray - a ray of sunlight

laser beam - a beam of light generated by a laser

low beam - the beam of a car's headlights that provides illumination for a short distance

pedicel, pedicle - a small stalk bearing a single flower of an inflorescence; an ultimate division of a common peduncle

math, mathematics, maths - a science (or group of related sciences) dealing with the logic of quantity and shape and arrangement

vector - a straight line segment whose length is magnitude and whose orientation in space is direction

cathode ray - a beam of electrons emitted by the cathode of an electrical discharge tube

electromagnetic radiation, electromagnetic wave, nonparticulate radiation - radiation consisting of waves of energy associated with electric and magnetic fields resulting from the acceleration of an electric charge

particle beam - a collimated flow of particles (atoms or electrons or molecules)

solfa syllable - one of the names for notes of a musical scale in solmization

spine - a sharp rigid animal process or appendage; as a porcupine quill or a ridge on a bone or a ray of a fish fin

fin - organ of locomotion and balance in fishes and some other aquatic animals

elasmobranch, selachian - any of numerous fishes of the class Chondrichthyes characterized by a cartilaginous skeleton and placoid scales: sharks; rays; skates

crampfish, electric ray, numbfish, torpedo - any sluggish bottom-dwelling ray of the order Torpediniformes having a rounded body and electric organs on each side of the head capable of emitting strong electric discharges

sawfish - primitive ray with sharp teeth on each edge of a long flattened snout

guitarfish - primitive tropical bottom-dwelling ray with a guitar-shaped body

stingray - large venomous ray with large barbed spines near the base of a thin whiplike tail capable of inflicting severe wounds

eagle ray - powerful free-swimming tropical ray noted for `soaring' by flapping winglike fins; usually harmless but has venomous tissue near base of the tail as in stingrays

manta ray, manta, devilfish - extremely large pelagic tropical ray that feeds on plankton and small fishes; usually harmless but its size make it dangerous if harpooned

skate - large edible rays having a long snout and thick tail with pectoral fins continuous with the head; swim by undulating the edges of the pectoral fins

give out, emit, give off - give off, send forth, or discharge; as of light, heat, or radiation, vapor, etc.; "The ozone layer blocks some harmful rays which the sun emits"

extend, run, lead, pass, go - stretch out over a distance, space, time, or scope; run or extend between two points or beyond a certain point; "Service runs all the way to Cranbury"; "His knowledge doesn't go very far"; "My memory extends back to my fourth year of life"; "The facts extend beyond a consideration of her personal assets"

process, treat - subject to a process or treatment, with the aim of readying for some purpose, improving, or remedying a condition; "process cheese"; "process hair"; "treat the water so it can be drunk"; "treat the lawn with chemicals" ; "treat an oil spill"