9 letters · 13 points in Scrabble
adjective of or relating to the dog days of summer
adjective relating to or especially immediately preceding or following the heliacal rising of Canicula (the Dog Star)
originFrom Latin canīculāris (“of or related to a puppy; Sothic”), from Canīcula (“puppy; Sirius”) + -aris (“forming adjectives”).
Etymology from Wiktionary, CC BY-SA 3.0