Definition of siblicide in English:

siblicide

Syllabification: sib·li·cide
Pronunciation: /ˈsibliˌsīd
 
/

noun

Zoology
  • The killing of a sibling or siblings, as a behavior pattern typical in various animal groups.
    More example sentences
    • Asymmetric larval mobility and the evolutionary transition from siblicide to nonsiblicidal behavior in parasitoid wasps
    • The vast majority of this mortality is due to food shortage and/or siblicide, though predation can also be a significant source of mortality.
    • Because obligate siblicide typically occurs shortly after the second chick hatches, brood size does not vary for the majority of the nestling period.

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used to address an English nobleman