English Explanatory Dictionary

actinal

English dictionary entry

Meanings

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.

Word forms

actinal

Etymology

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

Antonyms

abactinal

Related words

abactinal

Derived words

actinally diactinal hexactinal interactinal monactinal pentactinal tetractinal triactinal
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