Exhaustion

n.	1.	The act of draining out or draining off; the act of emptying completely of the contents.
	2.	The state of being exhausted or emptied; the state of being deprived of strength or spirits.
	3.	(Math.) An ancient geometrical method in which an exhaustive process was employed. It was nearly equivalent to the modern method of limits.

Noun	1.	exhaustion - extreme fatigue
	2.	exhaustion - serious weakening and loss of energy Synonyms: debilitation, enfeeblement, enervation
	3.	exhaustion - the act of exhausting something entirely

abatement, ablation, absorption, assimilation, attenuation, attrition, blunting, breakdown, burning up, cachexia, cachexy, chronic ill health, circulatory collapse, cleaning out, clearance, clearing, collapse, consumption, corrosion, crack-up, crackup, damping, deadening, debilitation, debility, decrease, decrement, decrepitude, defecation, delicacy, delicate health, deliquescence, depletion, depreciation, devitalization, digestion, dilution, discharge, discharging cargo, dissipation, dissolution, drain, drainage, draining, drawing out, dulling, eating up, effemination, egress, elimination, emptying, enervation, enfeeblement, erosion, evacuation, evaporation, evisceration, excretion, exhaustedness, exhausting, expending, expenditure, extenuation, fatigue, feebleness, finishing, fragility, frailty, healthlessness, hypochondria, hypochondriasis, ill health, impoverishment, inanition, infirmity, ingestion, invalidism, invalidity, languishing, languishment, lassitude, leakage, loss, mitigation, morbidity, morbidness, nervous breakdown, nervous exhaustion, nervous prostration, neurasthenia, off-loading, peakedness, poor health, prostration, reduction, relaxation, removal, shrinkage, sickliness, slackening, softening, spending, squandering, thinning, tiredness, unhealthiness, unloading, unsoundness, unwholesomeness, using, using up, valetudinarianism, venting, voidance, voiding, wastage, waste, wastefulness, wasting, wasting away, weakening, weakliness, wear and tear, weariness, wearing, wearing away, wearing down