radon seed


Also found in: Dictionary, Thesaurus, Legal, Financial, Encyclopedia.

seed

 [sēd]
1. the mature ovule of a flowering plant.
2. semen.
3. a small cylindrical shell of gold or other suitable material, used in application of radiation therapy.
4. to inoculate a culture medium with microorganisms.
plantago seed (plantain seed) (psyllium seed) cleaned, dried ripe seed of species of Plantago; used as a bulk-forming laxative.
radon seed a small sealed container for radon, for insertion into the tissues of the body in radiotherapy.

radon seed

a small, sealed tube of glass or gold containing radon and visible radiographically, for insertion into body tissues in the treatment of malignancies.

radon seed (rā´don),

n a small sealed container or tube for carrying radon. It is made of gold or glass, is inserted into the tissues for the treatment of certain disease entities, and is visible radiographically.

seed

1. the mature ovule of a flowering plant.
2. semen.
3. a small cylindrical shell of gold or other suitable material, used in application of radiation therapy.
4. to inoculate a culture medium with microorganisms.

seed dressing
chemicals mixed with seed grain to prevent infestion with insects and rodents and infection by fungi. Most are poisonous to animals and deaths may occur if the grain is not used as seed and is put back into the animal feed chain. The amount of feed in a collection of seed is usually very large and the probability is that it would be fed without dilution which would reduce its toxicity. Grain or grain products are also used as bait for birds, or to repel birds and to poison snails and other garden pests and all of them may be accessible to animals.
seed grain
cereal grain intended to be used as seed for a crop.
seed mixtures
mixtures of small grass and cereal seeds used as feed for companion birds. Some of the seeds used are the millets, chopped oat groats, canary grass (Phalaris spp.) seed, sunflower seed, hemp seed, rape seed.
plantago seed, plantain seed, psyllium seed
cleaned, dried ripe seed of species of Plantago; used as a cathartic.
radon seed
a small sealed container for radon, for insertion into the tissues of the body in radiotherapy.
seed tick
larval form, the stage prior to the nymph.