n. [ NL. acromegalia, fr. Gr. 'a`kron point, peak + me`gas, mega`loy, big. ] (Med.) Chronic enlargement of many bones of the skeleton, especially bones of hands, feet and face; the condition is due to excessive secretion of growth hormone. [ 1913 Webster + AS ]

a. [ Cf. F. acromial. ] (Anat.) Of or pertaining to the acromion. Dunglison. [ 1913 Webster ]

‖n. [ Gr. &unr_;; 'a`kros extreme + &unr_; shoulder: cf. F. acromion. ] (Anat.) The outer extremity of the shoulder blade. [ 1913 Webster ]

a. [ Gr. 'a`kros extreme + &unr_; alone + &unr_; a letter. ] Having each verse begin with the same letter as that with which the preceding verse ends. [ 1913 Webster ]

n. [ Gr. ba`ros weight + makro`s long + -meter. ] (Med.) An instrument for ascertaining the weight and length of a newborn infant. [ 1913 Webster ]

‖n. [ It. ] (Mus.) A quaver. [ Obs. ] [ 1913 Webster ]

n. [ W. cromlech; crom bending or bent, concave + llech a flat stone; akin to Ir. cromleac. ] (Archæol.) A monument of rough stones composed of one or more large ones supported in a horizontal position upon others. They are found chiefly in countries inhabited by the ancient Celts, and are of a period anterior to the introduction of Christianity into these countries. [ 1913 Webster ]

n. [ F. cromorne (cf. It. cromorno), fr. G. krummhorn crooked horn, cornet, an organ pipe turned like a trumpet; krumm crooked + horn horn. ] (Mus.) A certain reed stop in the organ, of a quality of tone resembling that of the oboe. [ Corruptly written cromona. ] [ 1913 Webster ]

prop. n. Oliver Cromwell, b. 1599, d. 1658.
Syn. -- Oliver Cromwell. [ WordNet 1.5 ]

prop. adj. of or pertaining to Oliver Cromwell. [ WordNet 1.5 ]

n. [ Macro- + -meter. ] An instrument for determining the size or distance of inaccessible objects by means of two reflectors on a common sextant. [ 1913 Webster ]

n. Of, pertaining to, or consisting of macromolecules. [ PJC ]

n. (Chem., Biochem.) A very large molecule, especially a polymer having from hundreds to many thousands of atoms, such as DNA, RNA, protein, polysaccharide, polyethylene, polycarbonate, etc. [ PJC ]

‖n. [ NL. ] (Anat.) A process projecting backward and downward from the acromion of the scapula of some mammals. [ 1913 Webster ]

n. [ micro + mercurialism. Coined by the chemist A. Stock in 1926. See mercurialism. ] (1926) A form of mercury poisoning resulting from long term exposure to low doses of mercury. The syndrome of micromercurialism involves complex symptoms of stress, fatigue, memory loss, fine tremors, muscular and reflex insufficiency and low blood pressure, caused by accumulation of mercury in the system. A condition of hyperthermia is accompanied by a series of functional changes under the effects of mercury. The combined simultaneous effect of toxic action, temperature and galvanic response infers a cycle of disintegration and change. Work With Mercury (1972) As proposed by Stock, the syndrome was considered as the union of pathological changes in human body caused by means of low concentrations (as low as 0.01 mg per cubic meter) of mercury vapor over long exposure times (up to 10 years). [ PJC ]

n. [ Micro- + -mere. ] (Biol.) One of the smaller cells, or blastomeres, resulting from the complete segmentation of a telolecithal ovum. [ 1913 Webster ]

n. A meteorite so small that it drifts down to Earth without becoming intensely heated in the earth's atmosphere. [ WordNet 1.5 ]

adj. of or relating to a micrometeorite. [ WordNet 1.5 ]

n. [ Micro- + -meter: cf. F. micromètre. ] An instrument, used with a telescope or microscope, for measuring minute distances, or the apparent diameters of objects which subtend minute angles. The measurement given directly is that of the image of the object formed at the focus of the object glass. [ 1913 Webster ]

Circular micrometer, or
Ring micrometer, a metallic ring fixed in the focus of the object glass of a telescope, and used to determine differences of right ascension and declination between stars by observations of the times at which the stars cross the inner or outer periphery of the ring. --
Double image micrometer, a micrometer in which two images of an object are formed in the field, usually by the two halves of a bisected lens which are movable along their line of section by a screw, and distances are determined by the number of screw revolutions necessary to bring the points to be measured into optical coincidence. When the two images are formed by a bisected object glass, it is called a divided-object-glass micrometer, and when the instrument is large and equatorially mounted, it is known as a heliometer. --
Double refraction micrometer, a species of double image micrometer, in which the two images are formed by the double refraction of rock crystal. --
Filar micrometer, or
Bifilar micrometer. See under Bifilar. --
Micrometer caliper or
Micrometer gauge (Mech.), a caliper or gauge with a micrometer screw, for measuring dimensions with great accuracy. --
Micrometer head, the head of a micrometer screw. --
Micrometer microscope, a compound microscope combined with a filar micrometer, used chiefly for reading and subdividing the divisions of large astronomical and geodetical instruments. --
Micrometer screw, a screw with a graduated head used in some forms of micrometers; turning the head one full revolution advances the position of the tip of the screw only by a little. --
Position micrometer. See under Position. --
Scale micrometer, or
Linear micrometer, a minute and very delicately graduated scale of equal parts used in the field of a telescope or microscope, for measuring distances by direct comparison. [ 1913 Webster ]

{ } a. [ Cf. F. micrométrique. ] Belonging to micrometry; made by the micrometer. -- Mi`cro*met"ric*al*ly, adv. [1913 Webster]

n. The art of measuring with a micrometer. [ 1913 Webster ]

n. [ Micro- + millimeter. ] The millionth part of a meter. The millionth part of a meter is now termed a micron, and the word micromillimeter does not conform to the IS use of the prefix micro-. [ 1913 Webster +PJC ]

prop. n. A genus of Old World harvest mice.
Syn. -- genus Micromyx. [ WordNet 1.5 ]

n. One who practices necromancy; a sorcerer; a wizard. [ 1913 Webster ]

n. [ OE. nigromaunce, nigromancie, OF. nigromance, F. nécromance, nécromancie, from L. necromantia, Gr. &unr_;; nekro`s a dead body (akin to L. necare to kill, Skr. naç to perish, vanish) + &unr_; divination, fr. &unr_; diviner, seer, akin to E. mania. See Mania, and cf. Internecine, Noxious. The old spelling is due to confusion with L. niger black. Hence the name black art. ] The art of revealing future events by means of a pretended communication with the dead; the black art; hence, magic in general; conjuration; enchantment. See Black art. [ 1913 Webster ]

This palace standeth in the air,
By necromancy placèd there. Drayton. [ 1913 Webster ]

n. An abnormal attraction to dead bodies.
Syn. -- necrophilia. [ WordNet 1.5 ]

n. Conjuration. [ R. ] [ 1913 Webster ]

With all the necromantics of their art. Young. [ 1913 Webster ]

{ , a. Of or pertaining to necromancy; performed by necromancy. -- Nec`ro*man"tic*al*ly, adv. [1913 Webster]

n. [ Gr. &unr_; bitter + &unr_; honey: cf. F. picromel. ] (Old Chem.) A colorless viscous substance having a bitter-sweet taste. [ 1913 Webster ]

☞ It was formerly supposed to be the essential principle of the bile, but is now known to be a mixture, principally of salts of glycocholic and taurocholic acids. [ 1913 Webster ]

n. [ Radio- + micrometer. ] (Physics) A very sensitive modification or application of the thermopile, used for indicating minute changes of radiant heat, or temperature. [ 1913 Webster ]

a. (Anat.) Situated beneath the acromial process of the scapula. [ 1913 Webster ]

a. (Anat.) Situated above the acromial process of the scapula. [ 1913 Webster ]