List of 9-letter words beginning with

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There are 15 nine-letter words beginning with DIO

DIOBOLONS	• DIOBOLON n. (Greek) an ancient Greek coin, also DIOBOL.
DIOCESANS	• diocesans n. Plural of diocesan. • DIOCESAN n. the bishop of a diocese.
DIOECIOUS	• dioecious adj. (Botany) Having the male and female reproductive organs on separate plants (of the same species) rather… • dioecious adj. (Zoology, rare) Having two distinct sexes. • diœcious adj. Alternative spelling of dioecious.
DIOECISMS	• DIOECISM n. the condition of being dioecious, having male and female sexual organs in different individuals.
DIOESTRUS	• dioestrus n. A period of sexual inactivity (in female mammals) between periods of oestrus. • diœstrus n. Archaic form of dioestrus. • DIOESTRUS n. a period of sexual inactivity, also DIESTRUM, DIESTRUS.
DIOLEFINS	• diolefins n. Plural of diolefin. • DIOLEFIN n. a compound containing two double bonds between hydrogen atoms, aka diene.
DIONYSIAC	• dionysiac adj. Wild and ecstatic. • Dionysiac adj. Of, or relating to Dionysus or to the Dionysia. • DIONYSIAC adj. orgiastic, also DIONYSIAN.
DIONYSIAN	• dionysian adj. Wild, irrational, and undisciplined. • Dionysian adj. Of or pertaining to Dionysus. • Dionysian adj. Alternative form of dionysian.
DIOPSIDES	• diopsides n. Plural of diopside. • DIOPSIDE n. a mineral, a crystallized variety of pyroxene, of a clear, grayish green color.
DIOPSIDIC	• diopsidic adj. Of or relating to the mineral diopside. • DIOPSIDIC adj. relating to diopside, a crystallized variety of pyroxene, of a clear, grayish green color.
DIOPTASES	• dioptases n. Plural of dioptase. • DIOPTASE n. a mineral, a hydrous silicate of copper, occurring in emerald-green crystals.
DIOPTRATE	• dioptrate adj. (Entomology) Divided transversely. • DIOPTRATE adj. of insects, having the compound eye divided transversely.
DIOPTRICS	• dioptrics n. Plural of dioptric. • dioptrics n. The study of the refraction of light, especially by lenses. • DIOPTRICS n. the study of light refraction.
DIORISTIC	• dioristic adj. (Dated) that distinguishes or defines something; distinctive. • DIORISTIC adj. serving to distinguish, also DIORISTICAL.
DIOSGENIN	• diosgenin n. (Organic chemistry) A steroid sapogenin, obtained from certain yams, that has estrogenic activity. • DIOSGENIN n. a crystalline substance obtained from the Mexican yam, used in the preparation of steroid hormones.

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: 64 words
Scrabble in French: 6 words
Scrabble in Spanish: 9 words
Scrabble in Italian: 11 words
Scrabble in German: 4 words
Scrabble in Romanian: 32 words

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