war·rant (wôr??nt, w?r?-)n.1. An order that serves as authorization, especially:a. Law A judicial writ authorizing the search or seizure of property, arrest of a person, or the execution of a legal judgment.b. A voucher authorizing payment or receipt of money.c. An option to buy stock at a specified price from an issuing company.2. a. Justification for an action or a belief; grounds: “The difficulty of predicting the future is no warrant to ignore it” (Brian Hayes).b. Something that provides assurance or confirmation; a guarantee or proof: “The kind of uncertainties and ambiguities … which may damage [his] essays … are often a warrant of authenticity in [his] fiction” (John Edward Hardy).3. Authorization or certification; sanction, as given by a superior.4. a. A warrant officer.b. A certificate of appointment given to a warrant officer.tr.v. war·rant·ed, war·rant·ing, war·rants 1. To provide adequate grounds for; justify or require: What could he have done that would warrant such a punishment?2. a. To guarantee (a product).b. To guarantee (a purchaser) indemnification against damage or loss.3. Law To guarantee clear title to (real property).[Middle English warant, from Old North French, of Germanic origin; see wer- in Indo-European roots.]war?rant·a·bil?i·ty n.war?rant·a·ble adj.war?rant·a·bly adv.war?rant·less adj.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.warrant (?w?r?nt) n1. anything that gives authority for an action or decision; authorization; sanction2. (Commerce) a document that certifies or guarantees, such as a receipt for goods stored in a warehouse, a licence, or a commission3. (Law) law an authorization issued by a magistrate or other official allowing a constable or other officer to search or seize property, arrest a person, or perform some other specified act4. (Military) (in certain armed services) the official authority for the appointment of warrant officers5. (Stock Exchange) a security that functions as a stock option by giving the owner the right to buy ordinary shares in a company at a specified date, often at a specified pricevb (tr) 6. to guarantee the quality, condition, etc, of (something)7. to give authority or power to8. to attest to or assure the character, worthiness, etc, of9. (Commerce) to guarantee (a purchaser of merchandise) against loss of, damage to, or misrepresentation concerning the merchandise10. (Law) law to guarantee (the title to an estate or other property)11. to declare boldly and confidently[C13: from Anglo-French warrant, variant of Old French guarant, from guarantir to guarantee, of Germanic origin; compare guaranty] ?warrantable adj ?warranta?bility, ?warrantableness n ?warrantably adv ?warranter n ?warrantless adjCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014war?rant (?w?r ?nt, ?w?r-) n. 1. authorization, sanction, or justification. 2. something that serves to give formal assurance of something; a guarantee. 3. something regarded as offering a guarantee or positive assurance of a thing: The cavalry and artillery were sure warrants of success. 4. a document certifying or authorizing something, as a receipt or license. 5. Law. an instrument authorizing an officer to make an arrest, search or seize property, etc. 6. the certificate of authority issued to an officer of the armed forces immediately below the rank of a commissioned officer. 7. a written authorization for the payment or receipt of money. v.t. 8. to authorize. 9. to give reason or sanction for; justify: Circumstances warrant such measures. 10. to vouch for (often used with a clause): I’ll warrant he did! 11. to give a formal assurance to or for; guarantee: to warrant payment. 12. to guarantee the quantity, quality, and other representations of (a product), as to a purchaser. 13. to assure indemnification against loss to. 14. Law. to guarantee title of property to (a grantee). [1175?1225; Middle English warant