Word Of The Day
Dorland's Word of the Day is a great way to broaden your knowledge of medical terminology. With a new and interesting term brought to you from the 32nd edition of Dorland's Illustrated Medical Dictionary each day, it's an easy and fun way to increase your medical vocabulary!
You can view a new word on this website each day.
Today's Word
real-time ultrasonography
a series of ultrasound images produced in rapid succession so that the video display shows motion of an organ or part.
Word of the Day Archive
intravascular ultrasonography
visualization of the interior of blood vessels by ultrasound; the transducer is mounted on the end of a catheter that is introduced percutaneously.
ubiquitin
a 76-amino acid polypeptide that is present in the cells of all higher animals and plants; it attaches to a protein as one step of intracellular protein breakdown.
trastuzumab
a recombinant DNA-derived humanized monoclonal antibody that binds to human growth factor receptor 2 (HER2), a protein overexpressed in some breast cancers; used as an antineoplastic in the treatment of metastatic breast cancer with overexpression of HER2, administered intravenously.
reverse cholesterol transport
the process by which high-density lipoproteins (HDL) facilitate the movement of cholesterol from peripheral cells back to the liver for excretion in the bile. Cholesterol released into plasma during cell turnover is adsorbed to HDL where it is esterified by lecithin-cholesterol acyltransferase; most of the cholesteryl esters then are transferred to intermediate-density or very-low-density lipoproteins by a specific transfer protein and these lipoproteins are ultimately taken up by the liver.
paracellular transport
transport of molecules around cells and through tight junctions in an epithelial cell layer.
trandolapril
an angiotensin-converting enzyme inhibitor used in the treatment of hypertension and post-myocardial infarction congestive heart failure or left ventricular dysfunction; administered orally.
train-of-four
a test for measuring the level of neuromuscular blockade: four consecutive stimuli are delivered along the path of a nerve and the response of the muscle is measured in order to evaluate stimuli that are blocked versus those that are delivered. Four equal muscle contractions will result if there is no neuromuscular blockade, but if nondepolarizing blockade is present, there will be a loss of twitch height and number, which will indicate the degree of blockade.