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obligate

[v. ob-li-geyt; adj. ob-li-git, -geyt] /v. ˈɒb lɪˌgeɪt; adj. ˈɒb lɪ gɪt, -ˌgeɪt/
verb (used with object), obligated, obligating.
1.
to bind or oblige morally or legally:
to obligate oneself to purchase a building.
2.
to pledge, commit, or bind (funds, property, etc.) to meet an obligation.
adjective
3.
morally or legally bound; obliged; constrained.
4.
necessary; essential.
5.
Biology. restricted to a particular condition of life, as certain organisms that can survive only in the absence of oxygen: obligate anaerobe (opposed to facultative).
Origin
late Middle English
1400-1450
1400-50; late Middle English obligat (adj.) < Latin obligātus (past participle of obligāre to bind), equivalent to ob- ob- + ligātus; see ligate
Related forms
obligable
[ob-li-guh-buh l] /ˈɒb lɪ gə bəl/ (Show IPA),
adjective
obligator, noun
nonobligated, adjective
preobligate, verb (used with object), preobligated, preobligating.
quasi-obligated, adjective
reobligate, verb (used with object), reobligated, reobligating.
unobligated, adjective
Can be confused
obligate, oblige.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for obligated
  • As for getting people to talk when they're not obligated to, it'll be interesting to see if this new structure helps.
  • They don't seem to feel obligated to explain famine and poverty.
  • The implication is that they're now obligated to give you something back.
  • If we're going to provide universal access to ambulances, people should be universally obligated to pay into it beforehand.
  • We may, but are not obligated to, monitor any or all activity and/or content on this site.
  • Bison-backed dinosaurs would have been obligated to take up a different posture to handle all that extra bulk.
  • Even if they owe more on their mortgages than their homes are worth, many people feel obligated to repay their loans.
  • And colleges are obligated by law to protect information about students.
  • For federally awarded contracts it is the amount obligated by the agency.
  • We were obligated to deliberate within the framework of the legal system.
British Dictionary definitions for obligated

obligate

/ˈɒblɪˌɡeɪt/
verb
1.
to compel, constrain, or oblige morally or legally
2.
(in the US) to bind (property, funds, etc) as security
adjective
3.
compelled, bound, or restricted
4.
(biology) able to exist under only one set of environmental conditions: an obligate parasite cannot live independently of its host Compare facultative (sense 4)
Derived Forms
obligable, adjective
obligative, adjective
obligator, noun
Word Origin
C16: from Latin obligāre to oblige
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for obligated

obligate

v.

1540s, "to bind, connect;" 1660s, "to put under moral obligation," back-formation from obligation, or else from Latin obligatus, past participle of obligare (see oblige). Oblige, with which it has been confused since late 17c., means "to do one a favor." Related: Obligated; obligating.

Online Etymology Dictionary, © 2010 Douglas Harper
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obligated in Medicine

obligate ob·li·gate (ŏb'lĭ-gĭt, -gāt')
adj.
Able to exist or survive only in a particular environment or by assuming a particular role.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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obligated in Science
obligate
  (ŏb'lĭ-gĭt, -gāt')   
Capable of existing only in a particular environment or by assuming a particular role. An obligate aerobe, such as certain bacteria, can live only in the presence of oxygen. An obligate parasite cannot survive independently of its host. Compare facultative.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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