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a. The killing of one's brother or sister.
b. One who has killed one's brother or sister.
2. The accidental killing of an ally caused by a discharge of a military weapon.

[Middle English, from Old French, from Latin frātricīdium and frātricīda : frāter, frātr-, brother; see bhrāter- in Indo-European roots + -cīdium and -cīda, -cide.]

frat′ri·cid′al (-sīd′l) 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.


[ˌfrætrɪˈsaɪdəl] adj [war, conflict] → fratricide
Collins English/French Electronic Resource. © HarperCollins Publishers 2005
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References in periodicals archive ?
What is quite disconcerting is the fact that the dispute is driven more by fratricidal competition between the two chambers of the House, each seeking to flex its muscle, but in the end creates a constitutional and economic crisis.
The fratricidal war didn't simply deepen the enmity between the two Koreas; it also sowed the seeds of an internal ideological conflict in the South.
'Shadow Parties,'' is about a communal clash in which Aremu (Ken Erics) from Aje, a town that neighbours Iludun, where his wife, Arike (Toyin Aimakhu) was born, well known for fratricidal wars, which had claimed the lives of Arike's parents.
It has been fratricidal war with imminent counter-accusations and exchange of acidic words.
Under the scheme, a general "terrorism psychosis" was fueled, triggering "fratricidal fire, chaotic shootings and contradictory military orders," that led to the death of 862 people and the wounding of another 2,150 after Ceausescu left.
With reported 200-plus parties in existence, the cauldron for more confusion, fratricidal dis-unity, plurality of mandates, etc., is evident.
The Ennahdha leader also pointed out that the events in Algeria and the fratricidal struggle in Libya "are in vain without an internal dialogue based on wisdom drawing lessons from the national dialogue in Tunisia, which maintains links of fraternity, economic and strategic complementarity with its two neighbours".
IN a report, India's defence ministry has indicated that despite psychological counselling and compulsory yoga exercises, suicides and fragging (fratricidal killing) among forces remained unabated.
aACAo Stop nagging and denouncing each other: because it germinates fratricidal instincts amongst the people of the land (abuse to the basic law, 'fraternity, unity and integrity' of the nation).
"Once again, we call on all the parties concerned to put an end to the fratricidal war and begin the process of national reconciliation," the foreign ministry stressed.
"(We deplore) the low-level political instrumentalization of the Khartoum Declaration of Entente of August 28th which has been diverted to the sole benefit of the deployment of the FACA (Central African Armed Forces), a revanchist army ready to return to a fratricidal armed struggle," said the UPC.