acephalous

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acephalous

[ā′sef·ə·ləs]
(botany)
Having the style originate at the base instead of at the apex of the ovary.
(zoology)
Lacking a head.

acephalous

(in SOCIAL ANTHROPOLOGY) (of a society) without formal leadership, e.g. with no provision for a chief or permanent political authority. See SEGMENTARY SOCIETIES, STATELESS SOCIETIES.