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

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There are 16 thirteen-letter words containing A, D, H, I, N, O, R and U

BOARDINGHOUSE	• boardinghouse n. Alternative spelling of boarding house. • boarding␣house n. A private house in which paying residents are provided with accommodation and meals. • boarding␣house n. A boarding school building where boarders live during term time.
DIATHERMANOUS	• diathermanous adj. Having the property of transmitting radiant heat; diathermal. • DIATHERMANOUS adj. permeable by or able to conduct radiant heat.
DISHARMONIOUS	• disharmonious adj. Not harmonious; lacking harmony. • DISHARMONIOUS adj. lacking in harmony.
DISHONOURABLE	• dishonourable adj. Alternative spelling of dishonorable. • DISHONOURABLE adj. not honourable, also DISHONORABLE.
DISHONOURABLY	• dishonourably adv. (Britain) Alternative spelling of dishonorably. • DISHONOURABLE adv. not honourable, also DISHONORABLE.
DOLPHINARIUMS	• dolphinariums n. Plural of dolphinarium. • DOLPHINARIUM n. a place where dolphins are kept.
GROUNDSHARING	• groundsharing v. Present participle of groundshare. • GROUNDSHARE v. to share a sports stadium with another team.
HYALURONIDASE	• hyaluronidase n. (Biochemistry) Any enzyme that catalyses the hydrolysis of hyaluronic acid. • HYALURONIDASE n. a mucolytic enzyme that facilitates the spread of fluids through tissues by lowering the viscosity of hyaluronic acid.
QUADRAPHONICS	• quadraphonics n. Quadraphonic sound. • QUADRAPHONICS n. a system of sound transmission using a minimum of four speakers, also QUADRAPHONY, QUADRIPHONICS, QUADROPHONICS, QUADROPHONY.
QUADRAPHONIES	• QUADRAPHONY n. a system of sound transmission using four speakers, also QUADRAPHONICS, QUADRIPHONICS, QUADROPHONICS, QUADROPHONY.
QUADRILLIONTH	• quadrillionth adj. The ordinal form of the number one quadrillion. • quadrillionth n. The person or thing in the quadrillionth position. • quadrillionth n. One of a quadrillion equal parts of a whole.
QUADRIPHONICS	• quadriphonics n. Alternative form of quadraphonics. • QUADRIPHONICS n. a system of sound transmission using a minimum of four speakers, also QUADRAPHONICS, QUADRAPHONY, QUADROPHONICS, QUADROPHONY.
QUADROPHONICS	• QUADROPHONICS n. a system of sound transmission using a minimum of four speakers, also QUADRAPHONICS, QUADRAPHONY, QUADRIPHONICS, QUADROPHONY.
QUADROPHONIES	• QUADROPHONY n. a system of sound transmission using four speakers, also QUADRAPHONICS, QUADRAPHONY, QUADRIPHONICS, QUADROPHONICS.
SUBARACHNOIDS	• SUBARACHNOID n. the space situated under the arachnoid membrane.
UNCHLORINATED	• unchlorinated adj. Not chlorinated. • UNCHLORINATED adj. not chlorinated.

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: 80 words
Scrabble in French: 19 words
Scrabble in Spanish: 20 words
Scrabble in Italian: 31 words
Scrabble in German: no word
Scrabble in Romanian: 15 words

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