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

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There are 14 thirteen-letter words containing A, D, H, I, 2O and Y

DIAPHOTOTROPY	• DIAPHOTOTROPY n. the state of being diaphototropic, turning transversely to the light.
DISHONOURABLY	• dishonourably adv. (Britain) Alternative spelling of dishonorably. • DISHONOURABLE adv. not honourable, also DISHONORABLE.
HYDROGENATION	• hydrogenation n. (Chemistry) The chemical reaction of hydrogen with another substance, especially with an unsaturated… • HYDROGENATION n. the act of hydrogenating.
HYDROLYSATION	• hydrolysation n. Alternative form of hydrolyzation. • HYDROLYSATION n. the process of hydrolysing, also HYDROLYZATION.
HYDROLYZATION	• hydrolyzation n. (Chemistry) The act of hydrolyzing. • HYDROLYZATION n. the process of hydrolyzing, also HYDROLYSATION.
HYDROSCOPICAL	• HYDROSCOPICAL adj. relating to a hydroscope, also HYDROSCOPIC.
HYDROTHORACIC	• hydrothoracic adj. Relating to hydrothorax. • HYDROTHORACIC adj. of or like hydrothorax, water liquid in the pleural cavity.
HYDROXYLATION	• hydroxylation n. (Organic chemistry) The introduction of a hydroxyl group into a molecule, especially by the replacement… • HYDROXYLATION n. the act of hydroxylating.
HYPERBOLOIDAL	• hyperboloidal adj. Having the shape or form of a hyperboloid. • HYPERBOLOIDAL adj. of or like a hyperboloid.
HYPOCHONDRIAC	• hypochondriac adj. Related to, or affected by hypochondria. • hypochondriac adj. Related to, or located in the hypochondrium. • hypochondriac n. A person affected with hypochondria.
HYPOCHONDRIAS	• hypochondrias n. Plural of hypochondria. • HYPOCHONDRIA n. suffering from imaginary illness.
HYPOCYCLOIDAL	• hypocycloidal adj. In the form of a hypocycloid. • HYPOCYCLOIDAL adj. of or like a hypocycloid.
PHOTODYNAMICS	• photodynamics n. The study of the activating effects of light on living organisms. • PHOTODYNAMICS n. the branch of biology concerned with the effects of light on the actions of plants and animals.
PHYTONADIONES	• PHYTONADIONE n. phylloquinone, vitamin K1.

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.

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English Wiktionary: 121 words
Scrabble in French: 7 words
Scrabble in Spanish: no word
Scrabble in Italian: 4 words
Scrabble in German: no word
Scrabble in Romanian: no word

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