MACHINERY n.
The supernatural means by which the action of a poetic or fictitious work is carried on and brought to a catastrophe; in an extended sense, the contrivances by which the crises and conclusion of a fictitious narrative, in prose or verse, are effected. The machinery, madam, is a term invented by the critics, to signify…
MAPLE n.
, or sugar maple, from the sap of which sugar is made, in the United States, in great quantities, by evaporation; the red or swamp maple is A. rubrum; the silver maple, A. dasycarpum, having fruit wooly when young; the striped maple, A. Pennsylvanium, called also moosewood. The common maple of Europe is A. campestre, t…
MATHEMATICS n.
t science, or class of sciences, which treats of the exact relations existing between quantities or magnitudes, and of the methods by which, in accordance with these relations, quantities sought are deducible from other quantities known or supposed; the science of spatial and quantitative relations.…
MEAN a. 2 definitions
ional (between two numbers) (Math.), the square root of their product. -- Mean sun, a fictitious sun supposed to move uniformly in the equator so as to be on the meridian each day at mean noon. -- Mean time, time as measured by an equable motion, as of a perfect clock, or as reckoned on the supposition that all the d…
MEDIASTINE; MEDIASTINUM n.
A partition; a septum; specifically, the folds of the pleura (and the space included between them) which divide the thorax into a right and left cavity. The space included between these folds of the pleura, called the mediastinal space, contains the heart and gives passage to the esophagus and great blood vessels.…
MEDITERRANEAN FRUIT FLY n.
A two-winged fly (Ceratitis capitata) with black and white markings, native of the Mediterranean countries, but now widely distributed. Its larva lives in ripening oranges, peaches, and other fruits, causing them to decay and fall.