S: (n) light, visible light, visible radiation ((physics) electromagnetic radiation that can produce a visual sensation) "the light was filtered through a soft glass window"
S: (n) radiation (energy that is radiated or transmitted in the form of rays or waves or particles)
S: (n) energy, free energy ((physics) a thermodynamic quantity equivalent to the capacity of a physical system to do work; the units of energy are joules or ergs) "energy can take a wide variety of forms"
S: (n) physical phenomenon (a natural phenomenon involving the physical properties of matter and energy)
S: (n) phenomenon (any state or process known through the senses rather than by intuition or reasoning)
S: (n) process, physical process (a sustained phenomenon or one marked by gradual changes through a series of states) "events now in process"; "the process of calcification begins later for boys than for girls"
S: (n) re, ray (the syllable naming the second (supertonic) note of any major scale in solmization)
S: (n) ray (any of the stiff bony spines in the fin of a fish)
S: (n) ray (cartilaginous fishes having horizontally flattened bodies and enlarged winglike pectoral fins with gills on the underside; most swim by moving the pectoral fins)
S: (v) ray (emit as rays) "That tower rays a laser beam for miles across the sky"
S: (v) radiate, ray (extend or spread outward from a center or focus or inward towards a center) "spokes radiate from the hub of the wheel"; "This plants radiate spines in all directions"