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actinomorphic Line breaks: ac¦tino|morph¦ic
Pronunciation: /ˌaktɪnə(ʊ)ˈmɔːfɪk/

Definition of actinomorphic in English:


Characterized by radial symmetry, such as a starfish or the flower of a daisy. Compare with zygomorphic.
Example sentences
  • Determining the orientation of an actinomorphic flower seems impossible in ebractate taxa.
  • The large, showy flowers are actinomorphic, with a bowl-shaped corolla made up of 5-8 pinkish-red petals.
  • This group is composed by eight species belonging to four families with nectarless, dish-shaped and actinomorphic flowers, which are showy, and yellow- or pink-colored.


Example sentences
  • If all parts are equally spaced around the centre, the flowers are radially symmetrical, a condition termed actinomorphy.
  • According to the theory, the primeval features are: actinomorphy, hermaphroditic polymer flower with an apocarpous gynoeceum.
  • The presence of five stamens is always associated with actinomorphy (radial symmetry) of the corolla (Ramonda, Thamnocharis, Bournea, Tengia, Conandron, Bellonia, Napeanthus p.p.).


Late 19th century: from Greek aktis, aktin- 'ray' + morphē 'form' + -ic.

Definition of actinomorphic in:
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