List of 13-letter words containing ••••••

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There are 19 thirteen-letter words containing H, I, O, 2P and 2T

DIAPHOTOTROPY	• DIAPHOTOTROPY n. the state of being diaphototropic, turning transversely to the light.
HAPTOTROPISMS	• HAPTOTROPISM n. curving in response to touch, as a tendril.
HYPOPITUITARY	• hypopituitary adj. Relating to hypopituitarism. • HYPOPITUITARY adj. relating to hypopituitarism.
PANTOPHAGISTS	• pantophagists n. Plural of pantophagist. • PANTOPHAGIST n. an omnivore.
PHOTOGRAPHIST	• photographist n. (Dated) One who produces photographs. • PHOTOGRAPHIST n. a photographer.
PHOTOPOSITIVE	• photopositive adj. (Biology) having a positive phototropic or phototactic response; attracted by light. • PHOTOPOSITIVE adj. exhibiting positive phototropism or phototaxis.
PHOTOTROPISMS	• phototropisms n. Plural of phototropism. • PHOTOTROPISM n. movement directed by light.
PHREATOPHYTIC	• phreatophytic adj. Relating to phreatophytes. • PHREATOPHYTIC adj. of or like a phreatophyte, a plant with a deep root system that draws its water supply from near the water table.
POSTAPARTHEID	• postapartheid adj. Occurring after a period of apartheid.
POSTULANTSHIP	• POSTULANTSHIP n. the office of postulant.
PROTECTORSHIP	• protectorship n. The office of a protector or regent; protectorate. • PROTECTORSHIP n. the office of protector.
PROTOTROPHIES	• prototrophies n. Plural of prototrophy. • PROTOTROPHY n. the state of being prototrophic.
PSYCHOPATHIST	• psychopathist n. (Medicine, dated) One who studies mental illness. • PSYCHOPATHIST n. a student of psychopathology.
PTERIDOPHYTES	• pteridophytes n. Plural of pteridophyte. • PTERIDOPHYTE n. the general name for the ferns and their allies.
PTERIDOPHYTIC	• pteridophytic adj. Of or pertaining to the ferns of the division Pteridophyta. • PTERIDOPHYTIC adj. of or like a pteridophyte, a fern, also PTERIDOPHYTOUS.
SPECTATORSHIP	• spectatorship n. The state or quality of being a spectator. • SPECTATORSHIP n. the office of spectator.
TRIPHOSPHATES	• triphosphates n. Plural of triphosphate. • TRIPHOSPHATE n. a salt or acid that contains three phosphate groups.
TROPHOTROPISM	• trophotropism n. The movements of the organs in a growing plant, as towards nutrient substances, induced by the chemical… • TROPHOTROPISM n. direction of growth by nutritional factors.
TYPOGRAPHISTS	• typographists n. Plural of typographist. • TYPOGRAPHIST n. one who does typography.

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.

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English Wiktionary: 87 words
Scrabble in French: 18 words
Scrabble in Spanish: no word
Scrabble in Italian: 11 words
Scrabble in German: no word
Scrabble in Romanian: 2 words

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