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 There are 14 fourteen-letter words containing I, O, 2R, 2S, T and Y| ASTROCHEMISTRY | • astrochemistry n. (Chemistry, astronomy) The study of the chemical composition of stars and outer space. • ASTROCHEMISTRY n. the study of molecules and radicals in outer space.
 |  | ERYTHROPOIESES | • erythropoieses n. Plural of erythropoiesis. • ERYTHROPOIESIS n. the making of red blood cells.
 |  | ERYTHROPOIESIS | • erythropoiesis n. The production of red blood cells (in bone marrow). • ERYTHROPOIESIS n. the making of red blood cells.
 |  | GYROSTABILISER | • gyrostabiliser n. (British spelling) alternative form of gyrostabilizer. • GYROSTABILISER n. a gyroscopic device for countering the roll of a ship, etc., also GYROSTABILIZER.
 |  | HETEROKARYOSIS | • heterokaryosis n. (Biology) The condition of being a heterokaryon. • HETEROKARYOSIS n. the condition of having cells that are heterokaryons.
 |  | HYPERKERATOSIS | • hyperkeratosis n. (Pathology) Excess keratin formation on the skin surface, as can be seen in a number of dermatologic conditions. • HYPERKERATOSIS n. hypertrophy of the horny layer of the skin.
 |  | HYSTRICOMORPHS | • hystricomorphs n. Plural of hystricomorph. • HYSTRICOMORPH n. any rodent of a suborder which includes porcupines, cavies, agoutis, and chinchillas.
 |  | MARTYRISATIONS | • martyrisations n. Plural of martyrisation. • MARTYRISATION n. the act of martyrising, also MARTYRIZATION.
 |  | MARTYROLOGISTS | • martyrologists n. Plural of martyrologist. • MARTYROLOGIST n. a writer of or a specialist in martyrology.
 |  | PSYCHROMETRIES | • psychrometries n. Plural of psychrometry. • PSYCHROMETRY n. measurement by psychrometer.
 |  | SINISTRORSALLY | • SINISTRORSAL adv. of a climbing plant, rising helically and turning to the right. |  | TYRANNOSAURIDS | • tyrannosaurids n. Plural of tyrannosaurid. |  | ULTRAROYALISTS | • ultraroyalists n. Plural of ultraroyalist. • ULTRAROYALIST n. an extreme royalist.
 |  | YESTERMORNINGS | • YESTERMORNING n. yesterday evening or morning. | 
 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 1Word.ws and WikWik.org.
 
 See this list for:English Wiktionary: 71 wordsScrabble in French: 13 wordsScrabble in Spanish: 5 wordsScrabble in Italian: no wordScrabble in German: no wordScrabble in Romanian: no word
 
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