(n): (physics) electromagnetic radiation that can produce a visual sensation
(n): a branch of an umbel or an umbelliform inflorescence
(n): a small stalk bearing a single flower of an inflorescence; an ultimate division of a common peduncle
(n): (mathematics) a straight line extending from a point
(n): a straight line segment whose length is magnitude and whose orientation in space is direction
(n): a group of nearly parallel lines of electromagnetic radiation
(n): radiation consisting of waves of energy associated with electric and magnetic fields resulting from the acceleration of an electric charge
(n): the syllable naming the second (supertonic) note of any major scale in solmization
(n): one of the names for notes of a musical scale in solmization
(n): any of the stiff bony spines in the fin of a fish
(n): a sharp rigid animal process or appendage; as a porcupine quill or a ridge on a bone or a ray of a fish fin
(n): cartilaginous fishes having horizontally flattened bodies and enlarged winglike pectoral fins with gills on the underside; most swim by moving the pectoral fins
(n): any of numerous fishes of the class Chondrichthyes characterized by a cartilaginous skeleton and placoid scales: sharks; rays; skates
(v): emit as rays
(v): give off, send forth, or discharge; as of light, heat, or radiation, vapor, etc.
(v): extend or spread outward from a center or focus or inward towards a center
(v): stretch out over a distance, space, time, or scope; run or extend between two points or beyond a certain point
(v): expose to radiation
(v): subject to a process or treatment, with the aim of readying for some purpose, improving, or remedying a condition
