| luminance |
the state or quality of emitting or reflecting light. [2 definitions] |
| luminary |
a body that radiates or reflects light, such as the sun or moon. [3 definitions] |
| luminesce |
to emit light at a fairly cold temperature; be or become luminescent. |
| luminescence |
the production of light not caused directly by heat, as by chemical reaction. (Cf. incandescence.) [2 definitions] |
| luminescent |
of or characterized by luminescence. |
| luminiferous |
producing or transmitting light. |
| luminosity |
the state of being luminous. [2 definitions] |
| luminous |
giving off light; glowing. [3 definitions] |
| lummox |
(informal) someone who is especially clumsy, slow, and unintelligent. |
| lump |
a mass or pile, esp. a small one. [7 definitions] |
| lumpen |
designating uprooted and disenfranchised people who have come to be regarded as the lowest in their social class. |
| lumpish |
resembling or having the characteristics of a lump. [3 definitions] |
| lump sum |
a sum of money, esp. a total amount, that is paid at one time rather than in installments. |
| lumpy |
full of or covered with lumps. [2 definitions] |
| lumpy jaw |
see "actinomycosis." |
| Luna |
in Roman mythology, the goddess of the moon; Selene. |
| lunacy |
mental derangement; insanity. [2 definitions] |
| luna moth |
a large pale-green North American moth with a crescent-shaped spot on each wing and long tail-like projections on the hind wings. |
| lunar |
of or relating to the moon. [2 definitions] |
| lunar caustic |
silver nitrate, used in medicine to cauterize tissues. |
| lunar eclipse |
the obscuring of the moon's reflected light by the earth's shadow when the earth passes between the moon and the sun. |