List of 21-letter words beginning with

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There are 12 twenty-one-letter words beginning with OP

open␣book␣decomposition — n. (Mathematics, topology) A decomposition of a 3-manifold into…
open␣circulatory␣system — n. A system of circulation which is achieved primarily from the…
open␣ended␣straight␣draw — n. (Poker) Four cards to a straight where cards of two different…
opening␣a␣can␣of␣whoop␣ass — v. Present participle of open a can of whoop ass.
operational␣definition — n. A showing of something — such as a variable, term, or object…
operational␣exhaustion — n. (Military, psychiatry) The acute psychological trauma experienced…
ophiocordycipitaceous — adj. (Mycology) Belonging to the Ophiocordycipitaceae.
ophthalmodynamometers — n. Plural of ophthalmodynamometer.
ophthalmodynamometric — adj. Relating to ophthalmodynamometry.
ophthalmopathological — adj. (Pathology) Relating to ophthalmopathology.
Opitz-Kaveggia␣syndrome — n. FG syndrome.
optoelectromechanical — adj. Optoelectric and electromechanical.

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