prostration

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The act of prostrating oneself.
• noun The state of being prostrate.
• noun Total exhaustion or weakness; collapse.

from The Century Dictionary.

• noun The act of prostrating, throwing down, or laying flat.
• noun The act of falling down, or the act of bowing, in humility or adoration; primarily, the act of falling on the face, but the word is now used also for kneeling or bowing in reverence and worship.
• noun Great depression; dejection: as, a prostration of spirits.
• noun In medicine, a great loss of strength, which may involve both voluntary and involuntary functions.

from the GNU version of the Collaborative International Dictionary of English.

• noun The act of prostrating, throwing down, or laying fiat.
• noun The act of falling down, or of bowing in humility or adoration; primarily, the act of falling on the face, but usually applied to kneeling or bowing in reverence and worship.
• noun The condition of being prostrate; great depression; lowness; dejection.
• noun (Med.) A latent, not an exhausted, state of the vital energies; great oppression of natural strength and vigor.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun The act or condition of prostrating (lying flat) oneself, as a sign of humility.
• noun A part of the ordination of Catholic and Orthodox priests.
• noun Being laid face down (prone).
• noun The condition of being prostrated, as from heat.
• noun A reverential bow performed in Middle Eastern cultures.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun the act of assuming a prostrate position
• noun an abrupt failure of function or complete physical exhaustion
• noun abject submission; the emotional equivalent of prostrating your body