Lexic.us

Definition of PET

1. Noun. A domesticated animal kept for companionship or amusement.

2. Verb. Stroke or caress gently. "Pet the lamb"

3. Adjective. Preferred above all others and treated with partiality. "The favored child"

4. Noun. A special loved one.

5. Verb. Stroke or caress in an erotic manner, as during lovemaking.

6. Noun. A fit of petulance or sulkiness (especially at what is felt to be a slight).

7. Noun. Using a computerized radiographic technique to examine the metabolic activity in various tissues (especially in the brain).

Definition of PET

1. n. A cade lamb; a lamb brought up by hand.

2. a. Petted; indulged; admired; cherished; as, a pet child; a pet lamb; a pet theory.

3. v. t. To treat as a pet; to fondle; to indulge; as, she was petted and spoiled.

4. v. i. To be a pet.

Definition of PET

1. to caress with the hand [v PETTED, PETTING, PETS]

Medical Definition of PET

1. A highly specialised research imaging technique using short lived radioactive substances - usually those made with a cyclotron. This technique is very sensitive in picking up active tumour tissue but does not measure the size of it. Tomographic images are formed by computer analysis of photons detected from annihilation of positrons emitted by radionuclides incorporated into biochemical substances; the images, often quantitated with a colour scale, show the uptake and distribution of the substances in the tissue, permitting analysis and localization of metabolic and physiological function. Because the half-lives of the radionuclides are so short (20 minutes to 2 hours), and the equipment expensive, PET is rarely used in a clinical setting. But since its development in the mid-1970s, it has proved the most important tool yet devised for experimental investigation of the living brain, whether healthy, traumatised, or diseased. With CT and MRI, it represents a new generation of computer imaging techniques that have revolutionised medicine and physiology. Acronym: PET (20 Jun 2000)

PET Pictures

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Lexicographical Neighbors of PET

pes anserinus pes cavus pes cavus pes equinovalgus pes equinovarus pes febricitans pes gigas pes hippocampi pes planum pes planus

pes planus pes pronatus pes valgus pes varus PET (current term) PET (current term) pet-food PET56 methyltransferase peta- petabyte

petabytes petahertz petahertzes petal petal petaled petaled petaliform petaline petaline

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