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ENGLISH · A WORD WITH POSSIBILITIES

actinal.

Pertaining to the side or surface around the mouth in an animal that has radial symmetry such as a starfish.

7 characters3 syllables approx.English language

Meaning & usage

adj
  1. Pertaining to the side or surface around the mouth in an animal that has radial symmetry such as a starfish.

  2. Pertaining to the axis of rotational symmetry in radiate animals.

Where this word comes from

From Ancient Greek ἀκτίς, ἀκτῖν- (aktís, aktîn-, “ray”) + -al. The usage was coined by Louis Agassiz (See quotations below.).

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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.

Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.