| radioactive dating | measurement of the amount of radioactive material (usually carbon ) that an object contains, can be used to estimate the age of the object |
cloud chamber
Wilson cloud chamber | apparatus that detects the path of high-energy particles passing through a supersaturated vapor, each particle ionizes molecules along its path and small droplets condense on them to produce a visible track |
| radioactive iodine test | test of thyroid function in which the patient is given an oral dose of radioactive iodine- |
| radioactive iodine excretion test | radioactive iodine test that measures the amount of radioactive iodine excreted in the urine |
radioactive iodine uptake test
RAIU | radioactive iodine test that measures the amount of radioactive iodine taken up by the thyroid gland |
| war cloud | an ominous sign that war threatens |
swarm
cloud | a group of many things in the air or on the ground, a swarm of insects obscured the light, clouds of blossoms, it discharged a cloud of spores |
| Oort cloud | (astronomy) a hypothetical huge collection of comets orbiting the sun far beyond the orbit of Pluto, perturbations (as by other stars) can upset a comet's orbit and may send it tumbling toward the sun |
Saint Cloud
St. Cloud | a town in central Minnesota on the Mississippi River, granite quarries |
altocumulus
altocumulus cloud | a cumulus cloud at an intermediate altitude of or miles |
altostratus
altostratus cloud | a stratus cloud at an intermediate altitude of or miles |
cirrocumulus
cirrocumulus cloud | a cloud at a high altitude consisting of a series of regularly arranged small clouds resembling ripples |
cirrostratus
cirrostratus cloud | a thin uniform layer of hazy cloud at high altitude |
cirrus
cirrus cloud | a wispy white cloud (usually of fine ice crystals) at a high altitude ( to miles) |
| cloud | a visible mass of water or ice particles suspended at a considerable altitude |
| cloud bank | a layer of clouds seen from a distance |
cumulonimbus
cumulonimbus cloud
thundercloud | a dark cloud of great vertical extent charged with electricity, associated with thunderstorms |
cumulus
cumulus cloud | a globular cloud |
| Large Magellanic Cloud | the larger of the two Magellanic Clouds visible from the southern hemisphere |
| Magellanic Cloud | either of two small galaxies orbiting the Milky Way, visible near the south celestial pole |
nacreous cloud
mother-of-pearl cloud | a luminous iridescent cloud at a high altitude that may be seen when the sun is a few degrees below the horizon |
nimbus
nimbus cloud
rain cloud | a dark grey cloud bearing rain |
| Small Magellanic Cloud | the smaller of the two Magellanic Clouds visible from the southern hemisphere |
| storm cloud | a heavy dark cloud presaging rain or a storm |
stratus
stratus cloud | a large dark low cloud |
seeder
cloud seeder | a person who seeds clouds |
| Red Cloud | leader of the Oglala who resisted the development of a trail through Wyoming and Montana by the United States government (-) |
| cloud | any collection of particles (e.g., smoke or dust) or gases that is visible |
| dust cloud | a cloud of dust suspended in the air |
mushroom
mushroom cloud
mushroom-shaped cloud | a large cloud of rubble and dust shaped like a mushroom and rising into the sky after an explosion (especially of a nuclear bomb) |
cloud grass
Agrostis nebulosa | Spanish grass with light feathery panicles grown for dried bouquets |
decay radioactive decay
disintegration | the spontaneous disintegration of a radioactive substance along with the emission of ionizing radiation |
| cloud | out of touch with reality, his head was in the clouds |
| cloud | suspicion affecting your reputation, after that mistake he was under a cloud |
bliss
blissfulness
cloud nine
seventh heaven
walking on air | a state of extreme happiness |
cloudiness
cloud cover
overcast | the state of the sky when it is covered by clouds |
| cloud | a cause of worry or gloom or trouble, the only cloud on the horizon was the possibility of dissent by the French |
fallout
radioactive dust | the radioactive particles that settle to the ground after a nuclear explosion |
| high-level radioactive waste | radioactive waste that left in a nuclear reactor after the nuclear fuel has been consumed |
| low-level radioactive waste | (medicine) radioactive waste consisting of objects that have been briefly exposed to radioactivity (as in certain medical tests) |
| radioactive material | material that is radioactive |
| radioactive waste | useless radioactive materials that are left after some laboratory or commercial process is completed |
| cloud over | become overcast, the sky clouded over |
| cloud | make milky or dull, The chemical clouded the liquid to which it was added |
mottle
dapple
cloud | colour with streaks or blotches of different shades |
| cloud | make less clear, the stroke clouded memories of her youth |
defile sully corrupt
taint
cloud | place under suspicion or cast doubt upon, sully someone's reputation |
| cloud | make gloomy or depressed, Their faces were clouded with sadness |
exult
walk on air
be on cloud nine
jump for joy | feel extreme happiness or elation |
| cloud | billow up in the form of a cloud, The smoke clouded above the houses |