Meaning
Related to radiation; used most often in reference to light, especially in the ultraviolet range.
Etymology
Origin: Ancient Greek
From Ancient Greek ἀκτίς, ἀκτῖν- (aktís, aktîn-, “ray”) + -ic.
Synonyms & Antonyms
Synonyms
luminary
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.