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 There are 6 fourteen-letter words containing I, L, P, Q and 2S| PLASTOQUINONES | • plastoquinones n. Plural of plastoquinone. • PLASTOQUINONE n. a plant substance that is related to vitamin K and plays a role in photosynthetic phosphorylation.
 |  | QUASIPARTICLES | • quasiparticles n. Plural of quasiparticle. • QUASIPARTICLE n. a composite entity (as a vibration in a solid) that is analogous in its behavior to a single particle.
 |  | SESQUIPEDALIAN | • sesquipedalian n. A long word. • sesquipedalian n. A person who uses long words.
 • sesquipedalian adj. (Of a word or words) Long; polysyllabic.
 |  | SESQUIPEDALITY | • sesquipedality n. An instance or condition of being sesquipedalian. • SESQUIPEDALITY n. the practice of using long words.
 |  | SESQUISULPHIDE | • sesquisulphide n. (Chemistry) Any sulphide containing three sulphur atoms for every two metal atoms. • SESQUISULPHIDE n. a compound with three atoms of sulphur to two of the other element or radical.
 |  | SUPERQUALITIES | • SUPERQUALITY n. exceptional quality. | 
 Scrabble words — in black are valid world wide — in RED are not valid in North America — in GREEN are valid only in North America.Definitions are short excerpt from the WikWik.org and 1Word.ws.
 
 See this list for:English Wiktionary: 21 wordsScrabble in French: 44 wordsScrabble in Spanish: 11 wordsScrabble in Italian: 4 wordsScrabble in German: no wordScrabble in Romanian: no word
 
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