devotion

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

• noun Ardent, often selfless affection and dedication, as to a person or principle.
• noun Religious ardor or zeal; piety.
• noun An act of religious observance or prayer, especially when private.
• noun A religious text presenting a prayer, frequently accompanied by an introductory scriptural passage and a homiletic gloss.
• noun The act of devoting or the state of being devoted.

from The Century Dictionary.

• noun The act of devoting; a definitive setting apart, appropriating, or consecrating: as, the devotion of one's means to a certain purpose; the devotion of one's life to the service of God.
• noun The state of being devoted.
• noun Earnest and faithful service arising from love, friendship, patriotism, etc.; enthusiastic manifestation of attachment.
• noun Close attention or application in general: as, his devotion to this pursuit impaired his health.
• noun An act of worship; a religious exercise.
• noun Alms given as an act of worship; offerings made at divine service.
• noun Something consecrated; an object of devotion.
• noun Power of devoting or applying to use; disposal; bidding.
• noun Synonyms Consecration, dedication, devotedness.
• noun 2 . Piety, Godliness, etc. (See religion.)
• noun . Attachment, Affection, etc. (see love), zeal, fidelity, constancy.

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

• noun The act of devoting; consecration.
• noun The state of being devoted; addiction; eager inclination; strong attachment love or affection; zeal; especially, feelings toward God appropriately expressed by acts of worship; devoutness.
• noun Act of devotedness or devoutness; manifestation of strong attachment; act of worship; prayer.
• noun obsolete Disposal; power of disposal.
• noun rare A thing consecrated; an object of devotion.
• noun See under Day.

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

• noun uncountable The act or state of devoting or being devoted.
• noun uncountable Feeling of strong or fervent affection; dedication
• noun uncountable Religious veneration, zeal, or piety.
• noun countable, ecclesiastical A prayer (often found in the plural)

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

• noun religious zeal; the willingness to serve God
• noun (usually plural) religious observance or prayers (usually spoken silently)
• noun commitment to some purpose
• noun feelings of ardent love