lumen-, lumin-, lum- +

A reference to, or relating to, the emission of light; especially, emitting self-generated light.

1. A plankton that produces light. When present in large groups, they make the sea appear to glow. Of the genus, Noctiluca.
2. Any marine animalcule that produces a phosphorescent appearance in the sea.
3. Any of a genus, Noctiluca, of large, sherical, reddish, luminescent protozoa that occur in vast numbers in the sea, causing parts of it to appear luminous at night.

1. A reference to bioluminescent organisms emitting light during darkness.
2. A term used to describe high clouds that are visible at night.

Luminescence caused by oxidation.

1. Transparent or translucent; clear.
2. Easy to understand; clear and simple in style; such as, a pellucid explanation.
3. Admitting the passage of light; transparent or translucent.

Through the light of knowledge the people will find a way.

Motto of Texas College, Tyler, Texas, USA.

Someone who collects matchboxes and matchbooks as a hobby.

1. The emission of light from a substance as a result of the absorption of electromagnetic radiation. The frequency of the light emitted is lower than that which is absorbed.
2. Luminescence caused by visible light or by infra-red or ultraviolet radiation.
3. Luminescence caused by exposure to light. In lower vertebrates it results from the reflection of light by iridophores in the skin.
4. The quality of being luminescent after being exposed to light or other electromagnetic radiation.

Allowing the passage of radiant energy; such as, X-rays, to a varying extent depending on the nature of the object. Also, roentgenolucent.

Slightly clear; transmitting light in a slight degree.

The light power output of the sun (or any other star); units are watts or solar luminosities.

In physics, a luminescent phenomenon that is produced in certain materials by high-frequency sound waves or phonons.

The emission of short bursts of light from imploding bubbles in a liquid when excited by sound.

A sonoluminescent result may, or may not occur, whenever a sound wave of sufficient intensity induces a gaseous cavity within a liquid to quickly collapse.

A reference to, or descriptive term for, the emission of short bursts of light from imploding bubbles in a liquid when excited by sound.

Tolerant of a narrow range of light intensity.