| Dictionary | Name | Region | Valid |
|---|---|---|---|
| Offcl. Scrabble Pl. Dict. & Offcl. Scrabble Words | SOWPODS | International / UK / Australia | YES |
| NASPA Word List 2020 | NWL2020 | USA / Canada / Thailand | YES |
| NASPA Word List 2018 | NWL2018 | USA / Canada / Thailand | YES |
| Tournament Word List 2016 | TWL16 | USA / Canada / Thailand | YES |
| Tournament Word List 2014 | TWL14 | USA / Canada / Thailand | YES |
| Tournament Word List 2006 | TWL06 | USA / Canada / Thailand | YES |
| Tournament Word List 1998 | TWL98 | USA / Canada / Thailand | YES |
| Collins Scrabble Words 2019 | CSW19 | International / UK / Australia | YES |
| Collins Scrabble Words 2015 | CSW15 | International / UK / Australia | YES |
| Collins Scrabble Words 2012 | CSW12 | International / UK / Australia | YES |
| Collins Scrabble Words 2007 | CSW07 | International / UK / Australia | YES |
| Offcl. Scrabble Players Dictionary | OSPD4 | USA / Canada / Thailand | YES |
| Australian Primary Schools | OWL2 | Australia | YES |
| Australian Primary Schools | OWL1 | Australia | YES |
| Words With Friends 2000 | ENABLE2K | Worldwide | YES |
| Words With Friends 1997 (retired) | ENABLE1 | Worldwide | YES |
| Letterpress | Letterpress | Worldwide | YES |
| Yet Another Word List | YAWL | Worldwide | YES |
| Show more | |||
11
O1P3E1R1A1T1I1O1N1
Noun |
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| operation - a medical procedure involving an incision with instruments; performed to repair damage or arrest disease in a living body; "they will schedule the operation as soon as an operating room is available"; "he died while undergoing surgery" | ||
| operation - (computer science) data processing in which the result is completely specified by a rule (especially the processing that results from a single instruction); "it can perform millions of operations per second" | ||
| operation - activity by a military or naval force (as a maneuver or campaign); "it was a joint operation of the navy and air force" | ||
| operation - the activity of operating something (a machine or business etc.); "her smooth operation of the vehicle gave us a surprisingly comfortable ride" | ||
| operation - the state of being in effect or being operative; "that rule is no longer in operation" | ||
| operation - a planned activity involving many people performing various actions; "they organized a rescue operation"; "the biggest police operation in French history"; "running a restaurant is quite an operation"; "consolidate the companies various operations" | ||
| operation - a process or series of acts especially of a practical or mechanical nature involved in a particular form of work; "the operations in building a house"; "certain machine tool operations" | ||
| operation - process or manner of functioning or operating; "the power of its engine determines its operation"; "the plane's operation in high winds"; "they compared the cooking performance of each oven"; "the jet's performance conformed to high standards" | ||
| operation - a business especially one run on a large scale; "a large-scale farming operation"; "a multinational operation"; "they paid taxes on every stage of the operation"; "they had to consolidate their operations" | ||
| operation - (mathematics) calculation by mathematical methods; "the problems at the end of the chapter demonstrated the mathematical processes involved in the derivation"; "they were learning the basic operations of arithmetic" | ||
| operation - (psychology) the performance of some composite cognitive activity; an operation that affects mental contents; "the process of thinking"; "the cognitive operation of remembering" |