Meaning
Pertaining to the side or surface around the mouth in an animal that has radial symmetry such as a starfish.
Etymology
Origin: Ancient Greek
From Ancient Greek ἀκτίς, ἀκτῖν- (aktís, aktîn-, “ray”) + -al. The usage was coined by Louis Agassiz (See quotations below.).
Synonyms & Antonyms
Antonyms
abactinal
NYT Puzzle Appearances
No published puzzle dates on file for this word yet. It is part of the official NYT Spelling Bee word list for 2019, 2021, 2023, 2024, 2025, 2026.