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The time which to reckon in making calculations. When a root is of a birth yknowe [known]. Chaucer. Aërial roots. (Bot.) (a) Small roots emitted from the stem of a plant in the open air, which, attaching themselves to the bark of trees, etc., serve to support the plant. (b) Large roots growing from the stem, etc., whic…

y; as, astronomical fractions, because formerly there were no others used in astronomical calculations. -- Sexagesimal, or Sexagenary, arithmetic, the method of computing by the sexagenary scale, or by sixties. -- Sexagesimal scale (Math.), the sexagenary scale.

The branch of mathematics which studies methods for the calculation of probabilities.

of a nation, and stunt the growth of its active energies, the ill or may do is beyond all calculation. Burke.

r influence; hence, similarity of condition, fortune, etc., as prefigured by astrological calculation. [R.] Motley.

nductivity, and Spectrum. -- Thermal unit (Physics), a unit chosen for the comparison or calculation of quantities of heat. The unit most commonly employed is the amount of heat necessary to raise the temperature of one gram or one pound of water from zero to one degree Centigrade. See Calorie, and under Unit.…

or aggregate of quantities or magnitudes taken as one, or for which 1 is made to stand in calculation; thus, in a table of natural sines, the radius of the circle is regarded as unity.