Quantum

Noun

 * 1)  The smallest possible, and therefore indivisible, unit of a given quantity or quantifiable phenomenon.
 * 2)  Quantity, amount.

Related terms

 * quantize

Adjective

 * 1)  Of a change, significant
 * 2)  Involving quanta

Thesaurus
aggregate, allotment, allowance, amount, amplitude, apportionment, atomerg, big end, bigger half, bit, bite, bougie decimale, budget, bulk, calorie, candle, candle lumen, candle power, candle-foot, candle-hour, candle-meter, chunk, commission, contingent, cut, deal, decimal candle, destiny, dinamode, dividend, dole, dyne, end, energid, equal share, erg, exposure meter, extent, fate, flux, foot-candle, foot-pound, force, half, halver, helping, intensity, interest, joule, light, lot, lumen, lumen meter, lumeter, lux, magnitude, mass, matter, measure, measurement, meed, mess, modicum, moiety, numbers, part, percentage, photon, piece, portion, proportion, quantity, quota, rake-off, ration, segment, share, slice, small share, stake, stock, strength, substance, sum, total, unit of flux, unit of light, whole