a cavity or passage in a tubular organ; "the lumen of the intestine"
a unit of luminous flux equal to the amount of light given out through a solid angle of 1 steradian by a point source of 1 candela intensity radiating uniformly in all directions
brightness enough to blind partially and temporarily
amaze or bewilder, as with brilliant wit or intellect or skill; "Her arguments dazzled everyone"; "The dancer dazzled the audience with his turns and jumps"
to cause someone to lose clear vision, especially from intense light; "She was dazzled by the bright headlights"
having little or no weight or apparent gravitational pull; light; "floating freely in a weightless condition"; "a baby bat...fluffy and weightless as a moth"; "jackets made of a weightless polyester fabric"
the basic unit of luminous intensity adopted under the Systeme International d'Unites; equal to 1/60 of the luminous intensity per square centimeter of a black body radiating at the temperature of 2,046 degrees Kelvin
examine eggs for freshness by holding them against a light
a feeling of considerable warmth; "the glow of new love"; "a glow of regret"
a steady even light without flames
experience a feeling of well-being or happiness, as from good health or an intense emotion; "She was beaming with joy"; "Her face radiated with happiness"
be exuberant or high-spirited; "Make the people's hearts glow"
emit a steady even light without flames; "The fireflies were glowing and flying about in the garden"
have a complexion with a strong bright color, such as red or pink; "Her face glowed when she came out of the sauna"
merriment expressed by a brightness or gleam or animation of countenance; "he had a sparkle in his eye"; "there's a perpetual twinkle in his eyes"
be lively or brilliant or exhibit virtuosity; "The musical performance sparkled"; "A scintillating conversation"; "his playing coruscated throughout the concert hall"
reflect brightly; "Unquarried marble sparkled on the hillside"
characterized by liveliness and lightheartedness; "buoyant spirits"; "his quick wit and chirpy humor"; "looking bright and well and chirpy"; "a perky little widow in her 70s"
tending to float on a liquid or rise in air or gas; "buoyant balloons"; "buoyant balsawood boats"; "a floaty scarf"