To continue to emit light without accompanying heat after exposure to and removal of a source of stimulating radiation.
1. The emission of light in darkness by the release of absorbed radiation; also, the light so produced; see bioluminescence.
2. The continued emission of light without heat after exposure to and removal of a source of electromagnetic radiation.
1. Continuing to emit light after the source of stimulating radiation has been removed.
2. Having the property of shining in the dark; luminous without combustion or without sensible heat; self-luminous.
photoluminescence (s) (noun)
, photoluminescences (pl)
The emission of luminous energy from a substance as a result of the absorption of electromagnetic radiation: The frequency of the photoluminescence
that is emitted is lower than that which is absorbed.
In the early evening, the sea snakes appeared to glisten in the dark as a result of the
photoluminescence caused by the sun.
, more photoluminescent, most photoluminescent
Results of exposures to lucent or light waves that come from matter after it has absorbed photons or electric radiation: Photoluminescence
is an important technique for measuring the purity and crystalline quality of semiconductors.
The rocks in the cave appeared to have a photoluminescent quality about them as they were blinking in the beam of the explorer's flashlight.
A condition of being fat.
prepubescent (pree" pyoo BES uhns) (adjective)
; more prepubescent, most prepubescent
Referring to the stage of life just before sexual characteristics appear in children: Mrs. Lawson loved teaching grade 5 in school when the children were still at the prepubescent age.
1. The approach of the age of puberty or sexual maturity.
2. A covering of fine, soft hairs on the body.
3. The attainment or onset of puberty.
1. Reaching puberty.
2. Covered with downy hair.
To become putrescent or putrid; to putrefy: "Ordinarily sewage does not putresce until from twenty-four to sixty hours after its discharge.
1. The quality of rotting and becoming putrid.
2. In a state of progressive putrefaction; decay, corruption, rottenness.
, more quiescent; most quiescent
1. Characterized by inactivity or repose; peacefulness and at rest: "The family was quiescent as they watched the interesting film on TV."
2. In medicine, pertaining to causing no trouble or symptoms: "The doctor told Jill that her quiescent gallstones should not be a problem; at least, not for awhile."