English contemporary dictionary. 2014.
Tetractys — The Tetractys is a triangular figure consisting of ten points arranged in four rows: one, two, three, and four points in each row. As a mystical symbol, it was very important to the followers of the secret worship of the Pythagoreans.Pythagorean… … Wikipedia
Neuromuscular-blocking drug — Global view of a neuromuscular junction: 1. Axon 2. Motor end plate 3. Muscle fiber 4. Myofibril … Wikipedia
Quaternary ammonium muscle relaxants — are quaternary ammonium salts used as drugs for muscle relaxation, most commonly in anasthesia. It is necessary to prevent spontaneous movement of muscle during surgical operations. Muscle relaxants inhibit neuron transmission to muscle by… … Wikipedia
quaternary — /kwot euhr ner ee, kweuh terr neuh ree/, adj., n., pl. quaternaries. adj. 1. consisting of four. 2. arranged in fours. 3. (cap.) Geol. noting or pertaining to the present period of earth history, forming the latter part of the Cenozoic Era,… … Universalium
quaternary — /kwɒˈtɜnəri / (say kwo ternuhree) adjective 1. consisting of four. 2. arranged in fours. –noun (plural quaternaries) 3. a group of four. 4. the number four. {Middle English, from Latin quaternārius} …
quaternary — [kwät′ər ner΄ē, kwə tʉr′nə rē] adj. [L quaternarius < quaterni, four together, four each < quater, four times < base of quattuor,FOUR] 1. consisting of four; in sets of four 2. [usually Q ] designating or of the second and current… … English World dictionary
