Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «S»:
Stop codon: A set of three adjacent bases in the DNA or their complementary bases in messenger RNA that specifies the end of a polypeptide chain.
The three stop codons (in messenger RNA) are UAA, UAG, and UGA. They are also called termination codons or nonsense codons.
U = uracil; A = adenine; G =...
Storm supplies kit
Storm supplies kit: You and your family can cope
best by preparing for disaster before it strikes. One way to prepare
is by assembling a Disaster Supplies Kit. Once disaster hits, you
won't have time to shop or search for
supplies. But if you've gathered supplies in advance, your
family can endur...
Storm surge: The onshore rush of sea or lake water caused primarily by the high winds that are associated with a landfalling hurricane, typhoon, or tropical cyclone and secondarily by the low pressure of the storm. The term tidal surge is often mis-used to describe storm surge, but a storm surge is ...
Strabismus: A condition in which the visual axes of the eyes are not parallel and the eyes appear to be looking in different directions. In divergent strabismus, or exotropia, the visual axes diverge. If the visual axes converge, it is called convergent strabismus or esotropia. The danger with strab...
Strabismus surgery: Surgery for strabismus, a condition in which the visual axes of the eyes are not parallel and the eyes appear to be looking in different directions. The concern is that the brain may come to rely more on one eye than the other and that the part of the brain circuitry connected t...
Straight jacket: See: Straitjacket....
Straightjacket: See: Straitjacket....
Strain: 1. An injury to a tendon or muscle resulting from overuse or trauma. 2. A hereditary tendency that originated from a common ancestor. 3. To exert maximum effort. 4. To filter....
Strain, lumbar: See: Lumbar strain....
Strait: 1. (adjective) Narrow or confined. As in straitjacket.
2. (noun) A narrow passageway. As in the pelvic strait....
Strait jacket: See: Straitjacket....
strait-jacket or strait jacket. 1. A garment shaped like a jacket with long sleeves the ends of which can be tied behind the back to restrain a violently disturbed person, as in a psychiatric in-patient unit, so that the person does not injure themselves or anyone else. (The strai...
Stratum corneum: The stratum corneum as a rule refers to the outermost layer of the epidermis, which is itself the outer layer of the skin.
The full name of the stratum corneum of the skin is the stratum corneum epidermidis. The other stratum corneum, the stratum corneum unguis, is the horny compact...
Strep: Very commonly used shortened form of
Streptococcus, a very common and important group of bacteria. See Streptococcus...
Strep test, rapid
Strep test, rapid: A diagnostic test commonly used to demonstrate whether streptococcus bacteria ("strep") are present in the throat. A throat infection with strep needs to be treated with an antibiotic.
The traditional test for a strep throat has been a throat culture; the major drawback is that t...