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The act of lengthening, or the state of being lengthened; protraction; extension. "Elongation of the fibers." Arbuthnot.

The elongation, or angular distance from the sun; -- said chiefly of the inferior planets. [R.]

A plant which increases in size by internal growth and elongation at the summit, having the wood in the form of bundles or threads, irregularly distributed throughout the whole diameter, not forming annual layers, and with no distinct pith. The leaves of the endogens have, usually, parallel veins, their flowers are mos…

Increasing by internal growth and elongation at the summit, instead of externally, and having no distinction of pith, wood, and bark, as the rattan, the palm, the cornstalk.

An instrument for measuring the extension of a body, especially for measuring the elongation of bars of iron, steel, or other material, when subjected to a tensile force.

h or foot, to double, or to compress it to half, its original length, were that degree of elongation or compression possible, or within the limits of elasticity; -- called also Young's modulus. -- Modulus of rupture, the measure of the force necessary to break a given substance across, as a beam, expressed by eighteen…

of materials, as iron, stone, etc., and their behavior under strains of various kinds, as elongation, bending, crushing, etc.