Yes. OXO is a valid word.
OXO is valid in the North American word list used for the Scrabble board game and other crossword tile games.
OXO is in the NASPA Word List 2023 (NWL2023), the North American list that Tileside uses for challenges and the one used in club and tournament play.
About OXO
OXO is a chemistry word describing a compound that contains oxygen, often joined to another atom by a double bond. It is an adjective, and it places the 8-point X between two O tiles, which is a nice way to clear a pair of O tiles while scoring the X. The X in the middle can sit on a letter bonus and count in two directions. It also hooks onto OX: one O on the end of an OX already in place makes OXO. Chemists add it to the names of compounds, as in oxo acids.
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OXO scores 10 points
Before any bonus squares: O 1 + X 8 + O 1 = 10. On a double-word square that's 20, on a triple-word 30, and every letter bonus under one of these tiles is applied first.
Example: OXO as the first play
Later in the game, put the X on a 3L square and OXO is worth 26 before any word bonus.
Change one tile
Same letters, other words
No other word in the list uses exactly the letters O, X and O.
Memory tip
OXO is a chemistry word meaning containing oxygen. Two O tiles around the X.
On these lists
Check words at the table, free
Tileside keeps score, checks words like this one during a challenge, tracks the tiles left in the bag and times turns. It runs in your phone's browser with no account and works offline.
Tileside checks words against the North American list, the NASPA Word List 2023. Your group's chosen dictionary always wins.
Word list: NASPA Word List 2023, used under license. NASPA Word List 2023 Edition © NASPA 2023. The copy included in this app is licensed for personal use. You may not use it for any commercial purposes.
Works with the Scrabble board game, played at the table. Tileside is an independent product, not affiliated with or endorsed by the makers of Scrabble.