MOVEMENT

n. Muv'm'nt. Lat., motus (from movere, to move). Fr., mouyement. Ger., Be.wegung. 1. The act or proce of moving or being moved, [a, 48.] For various m's not here given (e. g., antiperistaltic m., geotropic m., etc.), see under the adjectives or the cognate nouns. 2. In botany, motion, change in the position of a part or organ. [B, 77, 121, 229, 291 (a, 35).] All as so tonic m's. Of De Vries, in contradistinction to auxotonic m's, the m's of the mature organs of plants, or m's of variations; so called because, when the action of the stimulus that induced the m. has ceased, such organs resume their normal position. [Vines (a, 35).] Amoeboid m. Lat., motus (seu mutatio) amcebiformis. Fr., muuvenient amibo'ide (ou a mib i for me). Ger., amobo'ide Bevcegung. The m. of cells or of unicellular organisms (e. g., white blood-corpuscles) resembling that of the amoaba (i. e., a change in form by the rapid projection or withdrawal from any part of the surface of proce es [see PSECDOPOIUA], or the change in position as well as in form by the flowing of all the protoplasm into one of the proce es); one of the fundamental characteristics of undifferentiated protoplasm. [J.] Angular m. A m. by which the angle between two bones is increased or diminished. [C, 3.] Autonomic m. A spontaneous m.; a m. made, apparently, independently of external stimulation. [B, 229 (a, 35).J Auxotonic m's. Of De Vries, the m's of the growing organs of plants; so-called because the position which such organs a ume under the influence of stimulation is permanent. [Vines (a, 35).] Cf. All as so tonic m's. Brown i an in. Fr., mouvement Brownien. Ger., Brown^sche Bewegung, Molekularbewegung, A peculiar rapid whirling and oscillating m. of minute particles seen under the microscope (e. g., of the granular particles within the salivary corpuscles or of particles of vegetable or mineral origin suspended m a liquid); probably mechanical, but, according to some, entirely independent of appreciable external influences. [B, 19, 104, 229 (a, 35).] Cat a clitic m. of the foetal head. Ger.,kataklitische Bewegung. Of Kiineke, the first m. of the foetal head after its emergence from the vagina, being its mere dropping by its own weight. [A, 91.] Ciliary m. Lat., motus ciliaris. Fr., mouvement ciliaire. Ger., Ciliarbewegung, Flimmerbewegung, Wimperbewegung. The m. of the cilia of a ciliated cell or epithelium; specifically, (1) a rapid m. in the direction toward which the current of a circumambient fluid is made to flow and a le rapid m. in the opposite direction, quite well represented by a rapid closing and a slower opening of the hand, the fingers representing the cilia: or (2) a very rapid bending to and fro by which a free ciliated cell is propelled through a fluid, such as may be observed in the lower plants, especially those that live in water, and in the reproductive spores of most flowerle plants. [B, 229, 291 (a, 35); J, 28, 30, 46.] Circus in. Fr., mouvement de cirque (ou de manege). Ger., Circus- (oder Reitbahn-) Bewegung. A phenomenon observed in an animal after injury to one corpus striatum, optic thalamus, or crus cerebri, consisting in its moving about in a circle or performing a series of somersaults. [K, 3.] Complementary respiratory m's. M's in which different groups of respiratory muscles act simultaneously one group acting as if for inspiration and the other as if for expiration (e. g., contraction of the diaphragm and projection of the abdomen at the same time that the ribs fall, as in mixing the air in the lungs when the air-pa ages are closed; also marked in singing, speaking, etc.). ["Jour, of Physiol.," ii, 1890 (J).] Correlative m. Fr., mouvement correlatif. Ger., correlative Bewegung. An involuntary muscular m. such as sometimes accompanies an intentional m. [L, 35.] Enclitic m. of the fo3tal head. Ger., enklitische Bewegung. The reverse of the synclitic m., being a descent of that part of the head that is situated anteriorly before it clears the outlet of the pelvis. [A, 91.] Febrile m. Fr., mouvement febrile. See FEVER. Foetal m's.. Ger., Kin des be we gun gen, Be we gun gen des Fotus, Fruchtbeu-egungen. Muscular m's performed by the foetus in utero. Forced m. Fr., mouvement force. Ger., gezwungene (oder Zwa.nga-) Bewegung. An involuntary m. performed by an animal after injury to a portion of its brain. [K.] Cf. Circus m. and Index m. Hygroscopic m's. M's dependent O, no; O2, not; O3, whole; Th, thin; Th2, the; U, like oo in too; 296 [s. 35]