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 There are 9 thirteen-letter words containing D, H, L, N, O, R and U| 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.
 |  | 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.
 |  | LEUCITOHEDRON | • LEUCITOHEDRON n. the cubic icositetrahedron, simulated by typical leucite crystals. |  | 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.
 |  | THUNDERCLOUDS | • thunderclouds n. Plural of thundercloud. • thunder␣clouds n. Plural of thunder cloud.
 • THUNDERCLOUD n. a cloud charged with electricity and producing lightning and thunder.
 |  | UNCHLORINATED | • unchlorinated adj. Not chlorinated. • UNCHLORINATED adj. not chlorinated.
 |  | UNDERCLOTHING | • underclothing n. Clothing worn next to the skin; underwear. • UNDERCLOTHING n. clothes worn under others, esp. those next to the skin.
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 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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